/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/sll2n_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:50:55,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:50:55,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:50:55,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:50:55,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:50:55,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:50:55,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:50:55,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:50:55,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:50:55,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:50:55,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:50:55,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:50:55,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:50:55,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:50:55,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:50:55,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:50:55,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:50:55,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:50:55,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:50:55,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:50:55,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:50:55,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:50:55,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:50:55,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:50:55,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:50:55,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:50:55,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:50:55,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:50:55,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:50:55,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:50:55,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:50:55,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:50:55,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:50:55,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:50:55,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:50:55,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:50:55,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:50:55,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:50:55,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:50:55,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:50:55,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:50:55,713 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 14:50:55,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:50:55,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:50:55,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:50:55,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:50:55,780 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:50:55,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:50:55,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:50:55,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:50:55,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:50:55,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:50:55,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:50:55,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:50:55,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:50:55,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:50:55,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:50:55,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:50:55,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:50:55,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:50:55,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:50:55,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:50:55,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:50:55,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:50:55,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:50:55,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:50:55,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:50:55,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:50:55,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:50:55,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:50:55,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:50:55,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:50:56,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:50:56,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:50:56,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:50:56,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:50:56,250 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:50:56,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2020-10-28 14:50:56,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a62451d2/8d144b84a4be467d8485b8cb8796e163/FLAGc99c32cd0 [2020-10-28 14:50:57,135 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:50:57,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2020-10-28 14:50:57,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a62451d2/8d144b84a4be467d8485b8cb8796e163/FLAGc99c32cd0 [2020-10-28 14:50:57,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a62451d2/8d144b84a4be467d8485b8cb8796e163 [2020-10-28 14:50:57,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:50:57,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:50:57,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:50:57,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:50:57,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:50:57,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:50:57" (1/1) ... [2020-10-28 14:50:57,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364f1b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:57, skipping insertion in model container [2020-10-28 14:50:57,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:50:57" (1/1) ... [2020-10-28 14:50:57,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:50:57,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:50:57,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:50:57,873 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:50:57,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:50:58,060 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:50:58,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:58 WrapperNode [2020-10-28 14:50:58,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:50:58,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:50:58,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:50:58,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:50:58,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:58" (1/1) ... [2020-10-28 14:50:58,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:58" (1/1) ... [2020-10-28 14:50:58,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:58" (1/1) ... [2020-10-28 14:50:58,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:58" (1/1) ... [2020-10-28 14:50:58,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:58" (1/1) ... [2020-10-28 14:50:58,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:58" (1/1) ... [2020-10-28 14:50:58,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:58" (1/1) ... [2020-10-28 14:50:58,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:50:58,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:50:58,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:50:58,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:50:58,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:58" (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 14:50:58,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:50:58,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:50:58,230 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:50:58,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:50:58,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:50:58,232 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:50:58,232 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-28 14:50:58,232 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-28 14:50:58,232 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-28 14:50:58,232 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-28 14:50:58,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:50:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:50:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:50:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:50:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:50:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:50:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:50:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:50:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:50:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:50:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:50:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:50:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:50:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:50:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:50:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:50:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:50:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:50:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:50:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:50:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:50:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:50:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:50:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:50:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:50:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:50:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:50:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:50:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:50:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:50:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:50:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:50:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:50:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:50:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:50:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:50:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:50:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:50:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:50:58,241 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:50:58,241 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:50:58,241 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:50:58,241 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:50:58,242 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:50:58,242 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:50:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:50:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:50:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:50:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:50:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:50:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:50:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:50:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:50:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:50:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:50:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:50:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:50:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:50:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:50:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:50:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:50:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:50:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:50:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:50:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:50:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:50:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:50:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:50:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:50:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:50:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:50:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:50:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:50:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:50:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:50:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:50:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:50:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:50:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:50:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:50:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:50:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:50:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:50:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:50:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:50:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:50:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:50:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:50:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:50:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:50:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:50:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:50:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:50:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:50:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:50:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:50:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:50:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:50:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:50:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:50:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:50:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:50:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:50:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:50:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:50:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:50:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:50:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:50:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:50:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:50:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:50:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:50:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-28 14:50:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:50:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:50:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:50:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-28 14:50:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-28 14:50:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:50:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:50:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-28 14:50:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:50:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:50:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:50:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:50:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:50:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:50:58,662 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:50:59,081 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:50:59,082 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 14:50:59,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:50:59 BoogieIcfgContainer [2020-10-28 14:50:59,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:50:59,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:50:59,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:50:59,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:50:59,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:50:57" (1/3) ... [2020-10-28 14:50:59,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1699ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:50:59, skipping insertion in model container [2020-10-28 14:50:59,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:50:58" (2/3) ... [2020-10-28 14:50:59,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1699ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:50:59, skipping insertion in model container [2020-10-28 14:50:59,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:50:59" (3/3) ... [2020-10-28 14:50:59,097 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2020-10-28 14:50:59,113 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:50:59,120 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:50:59,137 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:50:59,168 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:50:59,168 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:50:59,169 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:50:59,169 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:50:59,169 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:50:59,169 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:50:59,169 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:50:59,170 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:50:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-28 14:50:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:50:59,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:50:59,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:50:59,200 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:50:59,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:50:59,207 INFO L82 PathProgramCache]: Analyzing trace with hash 871575057, now seen corresponding path program 1 times [2020-10-28 14:50:59,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:50:59,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918842601] [2020-10-28 14:50:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:50:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:50:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:50:59,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:50:59,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:50:59,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:50:59,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-28 14:50:59,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:50:59,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:50:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:50:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:50:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:50:59,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:51:00,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:00,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:00,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:00,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:51:00,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:00,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:00,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:00,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:00,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:51:00,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:00,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:51:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:00,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:51:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:00,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:51:00,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:51:00,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:00,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:51:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:00,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:00,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:00,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:51:00,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:00,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:51:00,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918842601] [2020-10-28 14:51:00,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:00,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:51:00,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818367058] [2020-10-28 14:51:00,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:51:00,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:00,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:51:00,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:51:00,221 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 7 states. [2020-10-28 14:51:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:00,673 INFO L93 Difference]: Finished difference Result 113 states and 148 transitions. [2020-10-28 14:51:00,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:51:00,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-28 14:51:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:00,684 INFO L225 Difference]: With dead ends: 113 [2020-10-28 14:51:00,684 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 14:51:00,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:51:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 14:51:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-28 14:51:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 14:51:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-28 14:51:00,740 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-10-28 14:51:00,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:00,741 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-28 14:51:00,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:51:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-28 14:51:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:51:00,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:00,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:00,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:51:00,744 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:00,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:00,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1746897243, now seen corresponding path program 1 times [2020-10-28 14:51:00,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:00,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414254361] [2020-10-28 14:51:00,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:00,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:00,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:01,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:04,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:04,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 14:51:04,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:04,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4080 [2020-10-28 14:51:04,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:04,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:51:04,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:04,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:04,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:04,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:04,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:51:04,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:04,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:04,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:04,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:04,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:04,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:05,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:05,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:05,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:05,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 14:51:05,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:05,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:51:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:51:05,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:05,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:05,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:05,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:05,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:05,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:05,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:51:05,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:05,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:51:05,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 14:51:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:05,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:05,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:05,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:51:05,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:05,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:51:05,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:05,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:51:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:05,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:05,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:05,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:05,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:51:05,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:05,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:05,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:51:05,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414254361] [2020-10-28 14:51:05,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:05,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:51:05,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143072786] [2020-10-28 14:51:05,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:51:05,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:05,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:51:05,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:51:05,190 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 8 states. [2020-10-28 14:51:05,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:05,491 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2020-10-28 14:51:05,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:51:05,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-10-28 14:51:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:05,493 INFO L225 Difference]: With dead ends: 82 [2020-10-28 14:51:05,493 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 14:51:05,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:51:05,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 14:51:05,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-28 14:51:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 14:51:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-28 14:51:05,506 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 40 [2020-10-28 14:51:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:05,507 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-28 14:51:05,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:51:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-28 14:51:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:51:05,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:05,509 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:05,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:51:05,510 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:05,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:05,510 INFO L82 PathProgramCache]: Analyzing trace with hash 819565713, now seen corresponding path program 2 times [2020-10-28 14:51:05,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:05,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087464019] [2020-10-28 14:51:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:05,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:06,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:10,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:10,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:51:10,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:51:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 14:51:10,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:10,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 14:51:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 14:51:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:10,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:10,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:10,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:10,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:10,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:10,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:10,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:10,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:10,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:10,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:10,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:10,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 14:51:10,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:10,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:51:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:11,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:11,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:11,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:11,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:11,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:51:11,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:11,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:11,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:51:11,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:11,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:11,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:11,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:11,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:11,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:11,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 14:51:11,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:11,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:11,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:11,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:11,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:11,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:11,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:51:11,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:51:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 14:51:11,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:11,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:51:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:51:11,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:12,001 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-10-28 14:51:13,271 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 129 DAG size of output: 103 [2020-10-28 14:51:13,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:13,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:13,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:13,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 14:51:13,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:13,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:51:13,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087464019] [2020-10-28 14:51:13,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:13,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 14:51:13,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576026523] [2020-10-28 14:51:13,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 14:51:13,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:13,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 14:51:13,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:51:13,556 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 23 states. [2020-10-28 14:51:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:14,932 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-10-28 14:51:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:51:14,935 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 49 [2020-10-28 14:51:14,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:14,937 INFO L225 Difference]: With dead ends: 65 [2020-10-28 14:51:14,938 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 14:51:14,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2020-10-28 14:51:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 14:51:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-10-28 14:51:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 14:51:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-28 14:51:14,951 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 49 [2020-10-28 14:51:14,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:14,952 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-28 14:51:14,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 14:51:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-28 14:51:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 14:51:14,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:14,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-28 14:51:14,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:51:14,954 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:14,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:14,955 INFO L82 PathProgramCache]: Analyzing trace with hash -751831059, now seen corresponding path program 1 times [2020-10-28 14:51:14,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:14,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483259381] [2020-10-28 14:51:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:15,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:18,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:18,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 14:51:18,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:51:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3568 [2020-10-28 14:51:18,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:18,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:51:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 14:51:18,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:18,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:18,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:18,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:51:18,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:18,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:18,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:18,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:18,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:18,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 14:51:18,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:18,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:51:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:18,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:18,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:18,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:18,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:51:18,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:18,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:18,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:18,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:18,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:18,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:18,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:51:18,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:18,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:18,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:18,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:51:18,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:18,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:18,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:51:18,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:18,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 14:51:18,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:18,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:18,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:51:18,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:18,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:51:18,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:19,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:19,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:19,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:19,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 14:51:19,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:19,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:51:19,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483259381] [2020-10-28 14:51:19,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:19,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 14:51:19,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115003401] [2020-10-28 14:51:19,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:51:19,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:19,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:51:19,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:51:19,236 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 14 states. [2020-10-28 14:51:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:19,949 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2020-10-28 14:51:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:51:19,950 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-28 14:51:19,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:19,953 INFO L225 Difference]: With dead ends: 68 [2020-10-28 14:51:19,955 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 14:51:19,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:51:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 14:51:19,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-28 14:51:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 14:51:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-10-28 14:51:19,980 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 51 [2020-10-28 14:51:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:19,980 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-10-28 14:51:19,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:51:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-10-28 14:51:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:51:19,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:19,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:19,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:51:19,988 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:19,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:19,988 INFO L82 PathProgramCache]: Analyzing trace with hash 135645180, now seen corresponding path program 1 times [2020-10-28 14:51:19,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:19,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565625158] [2020-10-28 14:51:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:20,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:21,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:21,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:23,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:51:25,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 14:51:25,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 14:51:25,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:51:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:51:25,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:25,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:25,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:25,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:25,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:25,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:25,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:25,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:25,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:51:25,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:25,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:25,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:25,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:25,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:25,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:51:25,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:25,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:25,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:25,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:25,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 14:51:25,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:25,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:51:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:51:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:25,630 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-28 14:51:25,859 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-28 14:51:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:26,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:26,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:26,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:26,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:51:26,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:26,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:26,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:26,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 14:51:26,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565625158] [2020-10-28 14:51:26,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:26,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 14:51:26,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497365720] [2020-10-28 14:51:26,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:51:26,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:26,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:51:26,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:51:26,117 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 15 states. [2020-10-28 14:51:27,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:27,047 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-10-28 14:51:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:51:27,048 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-28 14:51:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:27,049 INFO L225 Difference]: With dead ends: 73 [2020-10-28 14:51:27,049 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 14:51:27,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:51:27,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 14:51:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2020-10-28 14:51:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:51:27,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-10-28 14:51:27,074 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 52 [2020-10-28 14:51:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:27,075 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-10-28 14:51:27,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:51:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-10-28 14:51:27,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:51:27,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:27,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:27,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:51:27,077 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:27,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:27,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1885147516, now seen corresponding path program 1 times [2020-10-28 14:51:27,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:27,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325538606] [2020-10-28 14:51:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:27,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:27,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:31,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:32,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:32,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 14:51:32,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 14:51:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 14:51:32,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:32,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:51:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 14:51:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:51:32,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:32,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:32,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:32,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:32,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:32,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:32,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:32,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:32,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:32,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:32,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:32,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:32,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:51:32,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:32,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:32,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:32,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:32,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:32,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:32,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:32,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:32,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:32,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:32,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:32,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:32,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:32,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:51:32,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:32,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:32,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:32,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:51:32,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:32,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:32,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:32,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:32,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:51:32,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:32,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:51:32,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:32,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:32,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:32,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:32,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:32,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:32,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:32,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:32,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:32,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 14:51:32,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325538606] [2020-10-28 14:51:32,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:51:32,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:51:32,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812403813] [2020-10-28 14:51:32,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:51:32,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:32,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:51:32,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:51:32,328 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 7 states. [2020-10-28 14:51:32,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:32,610 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-10-28 14:51:32,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:51:32,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-28 14:51:32,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:32,613 INFO L225 Difference]: With dead ends: 72 [2020-10-28 14:51:32,613 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 14:51:32,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:51:32,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 14:51:32,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2020-10-28 14:51:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 14:51:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-28 14:51:32,623 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 52 [2020-10-28 14:51:32,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:32,624 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-28 14:51:32,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:51:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-28 14:51:32,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:51:32,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:32,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:32,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:51:32,626 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:32,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:32,626 INFO L82 PathProgramCache]: Analyzing trace with hash -869466984, now seen corresponding path program 1 times [2020-10-28 14:51:32,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:32,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318394120] [2020-10-28 14:51:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:32,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:32,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:37,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:37,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:51:37,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:51:37,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 14:51:37,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:37,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:37,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 14:51:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 14:51:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:37,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:37,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:37,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:37,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:51:37,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:37,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:37,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:37,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:37,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:37,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:37,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 14:51:37,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:37,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:51:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:51:37,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:38,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:38,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:38,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:38,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:51:38,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:38,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:38,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:38,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:38,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:38,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:38,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:38,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:51:38,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:38,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:51:38,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:38,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:38,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:38,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:38,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:51:38,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 14:51:38,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:38,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:51:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:51:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:38,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:38,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:38,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:38,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:38,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 14:51:38,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:38,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:39,254 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-28 14:51:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:51:39,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318394120] [2020-10-28 14:51:39,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:39,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 14:51:39,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317852055] [2020-10-28 14:51:39,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 14:51:39,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:39,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 14:51:39,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:51:39,284 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 22 states. [2020-10-28 14:51:41,074 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-28 14:51:41,432 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2020-10-28 14:51:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:41,977 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-10-28 14:51:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:51:41,978 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-28 14:51:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:41,980 INFO L225 Difference]: With dead ends: 72 [2020-10-28 14:51:41,980 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 14:51:41,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 14:51:41,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 14:51:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-10-28 14:51:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-28 14:51:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2020-10-28 14:51:41,993 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 54 [2020-10-28 14:51:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:41,993 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2020-10-28 14:51:41,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 14:51:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2020-10-28 14:51:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 14:51:41,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:41,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:41,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:51:41,995 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:41,996 INFO L82 PathProgramCache]: Analyzing trace with hash -2091730313, now seen corresponding path program 1 times [2020-10-28 14:51:41,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:41,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070111148] [2020-10-28 14:51:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:51:47,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 14:51:47,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 14:51:47,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:51:47,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:51:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:51:47,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:47,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:51:47,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:47,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:47,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:47,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:47,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:47,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:51:47,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:47,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:47,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:51:47,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:47,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:47,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:51:47,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:47,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:47,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:47,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:51:47,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 14:51:47,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:47,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:51:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:51:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:47,632 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-28 14:51:48,010 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 52 [2020-10-28 14:51:48,410 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2020-10-28 14:51:48,791 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2020-10-28 14:51:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:48,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:48,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:48,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:48,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:48,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:51:48,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:48,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:51:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:48,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 14:51:48,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070111148] [2020-10-28 14:51:48,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:48,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:51:48,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136247595] [2020-10-28 14:51:48,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:51:48,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:48,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:51:48,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:51:48,875 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 14 states. [2020-10-28 14:51:49,525 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-28 14:51:50,024 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-10-28 14:51:50,211 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 14:51:50,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:51:50,542 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-28 14:51:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:51:50,542 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-28 14:51:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:51:50,544 INFO L225 Difference]: With dead ends: 81 [2020-10-28 14:51:50,545 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 14:51:50,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:51:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 14:51:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2020-10-28 14:51:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 14:51:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-10-28 14:51:50,558 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 54 [2020-10-28 14:51:50,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:51:50,558 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-10-28 14:51:50,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:51:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-10-28 14:51:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:51:50,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:51:50,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:51:50,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:51:50,560 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:51:50,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:51:50,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1811364947, now seen corresponding path program 1 times [2020-10-28 14:51:50,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:51:50,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015971204] [2020-10-28 14:51:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:51:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:51,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:51,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:51:51,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:51,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-28 14:51:51,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:51,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 14:51:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:51:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 14:51:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:51:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:51,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:51,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:51:51,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:51:51,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:51,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:51:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:51:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:51:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:51,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:51,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:51,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:51:51,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:51,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 14:51:51,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:51,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:51,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:51:51,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:51,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:51:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:52,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:51:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:52,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:52,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:52,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:51:52,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:52,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:51:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:51:52,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:51:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:52,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:52,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:52,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:51:52,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:52,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:51:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:51:52,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:52,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:51:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:52,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:52,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:52,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:51:52,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:52,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 14:51:52,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:52,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:51:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:51:52,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:53,451 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-10-28 14:51:54,053 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 92 [2020-10-28 14:51:56,816 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 139 DAG size of output: 112 [2020-10-28 14:51:56,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:51:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:51:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:51:56,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:51:56,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:51:56,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:51:56,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:51:56,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:51:56,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:51:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:51:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:51:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:51:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:51:57,357 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-28 14:51:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 14:51:57,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015971204] [2020-10-28 14:51:57,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:51:57,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 14:51:57,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194154015] [2020-10-28 14:51:57,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 14:51:57,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:51:57,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 14:51:57,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:51:57,416 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 27 states. [2020-10-28 14:51:59,368 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 14:52:00,512 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-28 14:52:00,955 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-28 14:52:01,519 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2020-10-28 14:52:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:02,641 INFO L93 Difference]: Finished difference Result 82 states and 95 transitions. [2020-10-28 14:52:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:52:02,642 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 56 [2020-10-28 14:52:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:02,645 INFO L225 Difference]: With dead ends: 82 [2020-10-28 14:52:02,645 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 14:52:02,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 14:52:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 14:52:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2020-10-28 14:52:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 14:52:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2020-10-28 14:52:02,662 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 56 [2020-10-28 14:52:02,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:02,662 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2020-10-28 14:52:02,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 14:52:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2020-10-28 14:52:02,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 14:52:02,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:02,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-28 14:52:02,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:52:02,664 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:02,665 INFO L82 PathProgramCache]: Analyzing trace with hash 589101618, now seen corresponding path program 2 times [2020-10-28 14:52:02,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:02,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130432242] [2020-10-28 14:52:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:02,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:03,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:04,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:07,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:07,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:52:07,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:52:07,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 14:52:07,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:07,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:52:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:52:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:52:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:07,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:52:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:07,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:07,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:52:07,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:07,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:52:07,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:07,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:07,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:07,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:07,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:07,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:52:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:07,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:07,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:52:07,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:07,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:52:07,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:07,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:07,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:07,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:52:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:07,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:07,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:07,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:52:07,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:07,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:07,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 14:52:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:07,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:07,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:07,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:07,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:52:07,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:07,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:52:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:52:07,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:07,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:52:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:07,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:07,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:52:07,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:07,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 14:52:07,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:07,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:07,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:52:07,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:52:07,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:08,493 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2020-10-28 14:52:08,801 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2020-10-28 14:52:08,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:52:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:08,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:08,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:08,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:52:08,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:52:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:52:08,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:08,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:52:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:52:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:52:08,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-28 14:52:08,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130432242] [2020-10-28 14:52:08,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:52:08,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:52:08,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718098382] [2020-10-28 14:52:08,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:52:08,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:52:08,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:52:08,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:52:08,869 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand 14 states. [2020-10-28 14:52:09,568 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2020-10-28 14:52:09,856 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-28 14:52:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:52:10,126 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2020-10-28 14:52:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:52:10,127 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-28 14:52:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:52:10,129 INFO L225 Difference]: With dead ends: 82 [2020-10-28 14:52:10,129 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 14:52:10,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:52:10,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 14:52:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2020-10-28 14:52:10,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 14:52:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2020-10-28 14:52:10,142 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 56 [2020-10-28 14:52:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:52:10,143 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2020-10-28 14:52:10,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:52:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2020-10-28 14:52:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 14:52:10,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:52:10,144 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:52:10,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:52:10,145 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:52:10,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:52:10,145 INFO L82 PathProgramCache]: Analyzing trace with hash 440340193, now seen corresponding path program 1 times [2020-10-28 14:52:10,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:52:10,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061159674] [2020-10-28 14:52:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:52:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:52:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:10,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:11,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:12,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:52:15,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:52:15,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 14:52:15,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 14:52:15,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 14:52:15,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:52:15,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:52:15,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:52:15,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:52:15,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 14:52:15,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:52:15,201 ERROR L253 erpolLogProxyWrapper]: Interpolant 10 not inductive [2020-10-28 14:52:15,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:52:15,204 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-28 14:52:15,210 INFO L168 Benchmark]: Toolchain (without parser) took 77847.30 ms. Allocated memory was 159.4 MB in the beginning and 660.6 MB in the end (delta: 501.2 MB). Free memory was 115.6 MB in the beginning and 265.4 MB in the end (delta: -149.8 MB). Peak memory consumption was 376.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:52:15,211 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 159.4 MB. Free memory is still 133.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:52:15,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.62 ms. Allocated memory is still 159.4 MB. Free memory was 115.0 MB in the beginning and 129.6 MB in the end (delta: -14.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:52:15,212 INFO L168 Benchmark]: Boogie Preprocessor took 73.29 ms. Allocated memory is still 159.4 MB. Free memory was 129.6 MB in the beginning and 126.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:52:15,213 INFO L168 Benchmark]: RCFGBuilder took 946.61 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 126.8 MB in the beginning and 163.6 MB in the end (delta: -36.8 MB). Peak memory consumption was 42.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:52:15,214 INFO L168 Benchmark]: TraceAbstraction took 76121.40 ms. Allocated memory was 191.9 MB in the beginning and 660.6 MB in the end (delta: 468.7 MB). Free memory was 163.1 MB in the beginning and 265.4 MB in the end (delta: -102.3 MB). Peak memory consumption was 391.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:52:15,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 159.4 MB. Free memory is still 133.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 691.62 ms. Allocated memory is still 159.4 MB. Free memory was 115.0 MB in the beginning and 129.6 MB in the end (delta: -14.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.29 ms. Allocated memory is still 159.4 MB. Free memory was 129.6 MB in the beginning and 126.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 946.61 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 126.8 MB in the beginning and 163.6 MB in the end (delta: -36.8 MB). Peak memory consumption was 42.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 76121.40 ms. Allocated memory was 191.9 MB in the beginning and 660.6 MB in the end (delta: 468.7 MB). Free memory was 163.1 MB in the beginning and 265.4 MB in the end (delta: -102.3 MB). Peak memory consumption was 391.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...