/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:35:52,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:35:52,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:35:52,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:35:52,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:35:52,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:35:52,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:35:52,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:35:52,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:35:52,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:35:52,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:35:52,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:35:52,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:35:52,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:35:52,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:35:52,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:35:52,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:35:52,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:35:52,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:35:52,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:35:52,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:35:52,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:35:52,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:35:52,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:35:52,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:35:52,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:35:52,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:35:52,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:35:52,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:35:52,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:35:52,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:35:52,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:35:52,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:35:52,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:35:52,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:35:52,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:35:52,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:35:52,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:35:52,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:35:52,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:35:52,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:35:52,304 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 [2020-09-25 14:35:52,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:35:52,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:35:52,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:35:52,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:35:52,332 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:35:52,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:35:52,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:35:52,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:35:52,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:35:52,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:35:52,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:35:52,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:35:52,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:35:52,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:35:52,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:35:52,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:35:52,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:35:52,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:35:52,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:35:52,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:35:52,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:35:52,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:35:52,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:35:52,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:35:52,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:35:52,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:35:52,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:35:52,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:35:52,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:35:52,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:35:52,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:35:52,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:35:52,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:35:52,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:35:52,823 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:35:52,824 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 14:35:52,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4395937/916dc561855742b0bf394d84ee96962c/FLAGa895a9974 [2020-09-25 14:35:53,493 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:35:53,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 14:35:53,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4395937/916dc561855742b0bf394d84ee96962c/FLAGa895a9974 [2020-09-25 14:35:53,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4395937/916dc561855742b0bf394d84ee96962c [2020-09-25 14:35:53,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:35:53,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:35:53,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:53,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:35:53,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:35:53,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:53" (1/1) ... [2020-09-25 14:35:53,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605f46bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:53, skipping insertion in model container [2020-09-25 14:35:53,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:53" (1/1) ... [2020-09-25 14:35:53,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:35:53,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:35:54,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:54,516 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:35:54,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:54,653 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:35:54,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:54 WrapperNode [2020-09-25 14:35:54,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:54,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:35:54,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:35:54,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:35:54,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:54" (1/1) ... [2020-09-25 14:35:54,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:54" (1/1) ... [2020-09-25 14:35:54,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:54" (1/1) ... [2020-09-25 14:35:54,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:54" (1/1) ... [2020-09-25 14:35:54,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:54" (1/1) ... [2020-09-25 14:35:54,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:54" (1/1) ... [2020-09-25 14:35:54,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:54" (1/1) ... [2020-09-25 14:35:54,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:35:54,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:35:54,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:35:54,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:35:54,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:54" (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 [2020-09-25 14:35:54,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:35:54,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:35:54,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 14:35:54,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 14:35:54,818 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 14:35:54,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:35:54,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:35:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:35:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:35:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:35:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:35:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:35:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:35:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:35:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:35:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:35:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:35:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:35:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:35:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:35:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:35:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:35:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:35:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:35:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 14:35:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 14:35:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:35:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:35:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:35:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:35:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:35:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:35:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:35:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:35:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:35:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:35:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:35:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:35:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:35:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:35:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:35:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:35:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:35:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:35:54,827 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:35:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:35:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:35:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:35:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:35:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:35:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:35:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:35:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:35:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:35:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:35:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:35:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:35:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:35:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:35:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:35:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:35:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:35:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:35:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:35:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 14:35:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:35:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:35:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:35:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 14:35:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:35:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:35:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 14:35:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:35:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:35:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 14:35:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:35:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:35:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:35:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:35:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:35:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:35:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:35:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:35:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:35:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:35:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:35:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:35:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:35:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:35:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:35:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:35:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:35:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:35:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:35:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:35:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:35:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:35:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:35:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:35:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:35:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:35:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:35:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:35:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:35:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:35:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:35:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:35:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:35:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:35:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:35:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:35:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:35:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:35:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 14:35:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:35:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:35:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:35:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:35:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:35:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:35:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:35:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:35:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:35:55,178 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 14:35:55,536 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:35:55,536 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 14:35:55,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:55 BoogieIcfgContainer [2020-09-25 14:35:55,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:35:55,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:35:55,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:35:55,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:35:55,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:35:53" (1/3) ... [2020-09-25 14:35:55,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234823b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:55, skipping insertion in model container [2020-09-25 14:35:55,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:54" (2/3) ... [2020-09-25 14:35:55,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234823b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:55, skipping insertion in model container [2020-09-25 14:35:55,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:55" (3/3) ... [2020-09-25 14:35:55,552 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 14:35:55,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:35:55,575 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:35:55,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:35:55,628 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:35:55,628 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:35:55,628 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:35:55,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:35:55,628 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:35:55,629 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:35:55,629 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:35:55,629 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:35:55,652 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 14:35:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 14:35:55,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:55,666 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] [2020-09-25 14:35:55,666 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:55,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:55,674 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 14:35:55,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:55,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314044354] [2020-09-25 14:35:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:55,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:56,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:56,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:56,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:35:56,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:35:56,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-09-25 14:35:56,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:56,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:35:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:35:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:35:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:56,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:56,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:56,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:35:56,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:56,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:56,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314044354] [2020-09-25 14:35:56,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:56,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:35:56,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466864215] [2020-09-25 14:35:56,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:35:56,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:56,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:35:56,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:35:56,863 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 5 states. [2020-09-25 14:35:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:57,442 INFO L93 Difference]: Finished difference Result 377 states and 443 transitions. [2020-09-25 14:35:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:35:57,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-25 14:35:57,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:57,469 INFO L225 Difference]: With dead ends: 377 [2020-09-25 14:35:57,469 INFO L226 Difference]: Without dead ends: 201 [2020-09-25 14:35:57,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:35:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-25 14:35:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-09-25 14:35:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 14:35:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-09-25 14:35:57,573 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 31 [2020-09-25 14:35:57,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:57,574 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-09-25 14:35:57,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:35:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-09-25 14:35:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 14:35:57,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:57,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:57,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:35:57,589 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:57,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:57,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-09-25 14:35:57,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:57,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743688791] [2020-09-25 14:35:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:57,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:57,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:57,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:58,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:58,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:35:58,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:35:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-09-25 14:35:58,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:58,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:35:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:35:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:35:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:58,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:58,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:58,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:58,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:58,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:35:58,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:58,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:58,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:35:58,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743688791] [2020-09-25 14:35:58,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:58,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:35:58,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379309419] [2020-09-25 14:35:58,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:35:58,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:58,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:35:58,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:35:58,591 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 7 states. [2020-09-25 14:35:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:59,033 INFO L93 Difference]: Finished difference Result 277 states and 304 transitions. [2020-09-25 14:35:59,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:35:59,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-09-25 14:35:59,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:59,037 INFO L225 Difference]: With dead ends: 277 [2020-09-25 14:35:59,037 INFO L226 Difference]: Without dead ends: 271 [2020-09-25 14:35:59,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:35:59,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-25 14:35:59,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 213. [2020-09-25 14:35:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 14:35:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 238 transitions. [2020-09-25 14:35:59,054 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 238 transitions. Word has length 54 [2020-09-25 14:35:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:59,055 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 238 transitions. [2020-09-25 14:35:59,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:35:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 238 transitions. [2020-09-25 14:35:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 14:35:59,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:59,057 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:59,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:35:59,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:59,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:59,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1812282598, now seen corresponding path program 1 times [2020-09-25 14:35:59,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:59,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960798319] [2020-09-25 14:35:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:59,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:00,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:00,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 14:36:00,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:36:00,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1132 [2020-09-25 14:36:00,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:00,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:36:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:36:00,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:00,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:00,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:00,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:00,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:00,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:00,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:00,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:00,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:00,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:00,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960798319] [2020-09-25 14:36:00,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:00,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:36:00,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995618070] [2020-09-25 14:36:00,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:36:00,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:00,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:36:00,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:36:00,286 INFO L87 Difference]: Start difference. First operand 213 states and 238 transitions. Second operand 7 states. [2020-09-25 14:36:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:00,666 INFO L93 Difference]: Finished difference Result 280 states and 307 transitions. [2020-09-25 14:36:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:36:00,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 14:36:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:00,669 INFO L225 Difference]: With dead ends: 280 [2020-09-25 14:36:00,669 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 14:36:00,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 14:36:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 210. [2020-09-25 14:36:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-25 14:36:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2020-09-25 14:36:00,688 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 60 [2020-09-25 14:36:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:00,689 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2020-09-25 14:36:00,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:36:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2020-09-25 14:36:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 14:36:00,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:00,693 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:00,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:36:00,694 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:00,694 INFO L82 PathProgramCache]: Analyzing trace with hash -775600822, now seen corresponding path program 1 times [2020-09-25 14:36:00,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:00,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80831205] [2020-09-25 14:36:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:01,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:01,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 14:36:01,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:36:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-09-25 14:36:01,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:01,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:36:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:36:01,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:01,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:01,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:01,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:01,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:01,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:01,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:01,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:01,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:02,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80831205] [2020-09-25 14:36:02,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:02,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:36:02,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911334936] [2020-09-25 14:36:02,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:36:02,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:02,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:36:02,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:36:02,006 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand 7 states. [2020-09-25 14:36:02,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:02,375 INFO L93 Difference]: Finished difference Result 262 states and 288 transitions. [2020-09-25 14:36:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:36:02,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 14:36:02,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:02,377 INFO L225 Difference]: With dead ends: 262 [2020-09-25 14:36:02,378 INFO L226 Difference]: Without dead ends: 238 [2020-09-25 14:36:02,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:02,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-25 14:36:02,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 205. [2020-09-25 14:36:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-25 14:36:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 228 transitions. [2020-09-25 14:36:02,402 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 228 transitions. Word has length 60 [2020-09-25 14:36:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:02,402 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 228 transitions. [2020-09-25 14:36:02,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:36:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 228 transitions. [2020-09-25 14:36:02,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 14:36:02,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:02,407 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:02,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:36:02,407 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1984006919, now seen corresponding path program 1 times [2020-09-25 14:36:02,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:02,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799384424] [2020-09-25 14:36:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:02,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:02,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:06,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:06,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 14:36:06,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:06,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4172 [2020-09-25 14:36:06,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:06,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:36:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:36:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:36:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:06,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:06,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:06,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:06,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:06,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:36:06,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:06,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:06,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:06,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:06,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:06,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:06,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799384424] [2020-09-25 14:36:06,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:06,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:36:06,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580295243] [2020-09-25 14:36:06,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:36:06,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:06,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:36:06,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:36:06,864 INFO L87 Difference]: Start difference. First operand 205 states and 228 transitions. Second operand 11 states. [2020-09-25 14:36:07,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:07,524 INFO L93 Difference]: Finished difference Result 286 states and 313 transitions. [2020-09-25 14:36:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:36:07,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-09-25 14:36:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:07,526 INFO L225 Difference]: With dead ends: 286 [2020-09-25 14:36:07,526 INFO L226 Difference]: Without dead ends: 280 [2020-09-25 14:36:07,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:36:07,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-25 14:36:07,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 224. [2020-09-25 14:36:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 14:36:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 249 transitions. [2020-09-25 14:36:07,543 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 249 transitions. Word has length 65 [2020-09-25 14:36:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:07,544 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 249 transitions. [2020-09-25 14:36:07,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:36:07,544 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 249 transitions. [2020-09-25 14:36:07,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 14:36:07,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:07,546 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:07,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:36:07,546 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:07,547 INFO L82 PathProgramCache]: Analyzing trace with hash -611343915, now seen corresponding path program 1 times [2020-09-25 14:36:07,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:07,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010180060] [2020-09-25 14:36:07,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:07,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:07,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:10,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:10,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 14:36:10,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:10,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3086 [2020-09-25 14:36:10,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:10,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:36:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:36:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:36:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:10,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:10,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:10,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:10,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:10,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:36:10,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:10,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:10,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:10,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010180060] [2020-09-25 14:36:10,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:10,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:36:10,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850423811] [2020-09-25 14:36:10,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:36:10,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:10,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:36:10,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:36:10,796 INFO L87 Difference]: Start difference. First operand 224 states and 249 transitions. Second operand 11 states. [2020-09-25 14:36:11,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:11,449 INFO L93 Difference]: Finished difference Result 302 states and 332 transitions. [2020-09-25 14:36:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:36:11,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-09-25 14:36:11,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:11,452 INFO L225 Difference]: With dead ends: 302 [2020-09-25 14:36:11,452 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 14:36:11,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:36:11,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 14:36:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 236. [2020-09-25 14:36:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-25 14:36:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 262 transitions. [2020-09-25 14:36:11,461 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 262 transitions. Word has length 65 [2020-09-25 14:36:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:11,461 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 262 transitions. [2020-09-25 14:36:11,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:36:11,462 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 262 transitions. [2020-09-25 14:36:11,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 14:36:11,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:11,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:11,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:36:11,463 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:11,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:11,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1316127329, now seen corresponding path program 1 times [2020-09-25 14:36:11,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:11,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709049788] [2020-09-25 14:36:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:14,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:16,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:16,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:36:16,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:36:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:36:16,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:16,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:36:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:36:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:36:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:16,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:16,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:16,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:36:16,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:16,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:16,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:16,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709049788] [2020-09-25 14:36:16,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:16,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:36:16,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549629838] [2020-09-25 14:36:16,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:36:16,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:16,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:36:16,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:16,635 INFO L87 Difference]: Start difference. First operand 236 states and 262 transitions. Second operand 9 states. [2020-09-25 14:36:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:17,166 INFO L93 Difference]: Finished difference Result 303 states and 333 transitions. [2020-09-25 14:36:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:36:17,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-09-25 14:36:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:17,168 INFO L225 Difference]: With dead ends: 303 [2020-09-25 14:36:17,168 INFO L226 Difference]: Without dead ends: 288 [2020-09-25 14:36:17,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:36:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-25 14:36:17,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 243. [2020-09-25 14:36:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-25 14:36:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 270 transitions. [2020-09-25 14:36:17,179 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 270 transitions. Word has length 71 [2020-09-25 14:36:17,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:17,179 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 270 transitions. [2020-09-25 14:36:17,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:36:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 270 transitions. [2020-09-25 14:36:17,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 14:36:17,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:17,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:17,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:36:17,181 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:17,181 INFO L82 PathProgramCache]: Analyzing trace with hash -279445553, now seen corresponding path program 1 times [2020-09-25 14:36:17,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:17,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914254073] [2020-09-25 14:36:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:19,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:19,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:36:19,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:36:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1957 [2020-09-25 14:36:19,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:19,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:36:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 14:36:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:36:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:19,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:19,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:19,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:19,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:19,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:36:19,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:19,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:19,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:19,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:19,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:19,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914254073] [2020-09-25 14:36:19,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:19,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 14:36:19,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674295507] [2020-09-25 14:36:19,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 14:36:19,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:19,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 14:36:19,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:36:19,515 INFO L87 Difference]: Start difference. First operand 243 states and 270 transitions. Second operand 16 states. [2020-09-25 14:36:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:20,909 INFO L93 Difference]: Finished difference Result 306 states and 336 transitions. [2020-09-25 14:36:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 14:36:20,910 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 14:36:20,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:20,912 INFO L225 Difference]: With dead ends: 306 [2020-09-25 14:36:20,912 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 14:36:20,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2020-09-25 14:36:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 14:36:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 247. [2020-09-25 14:36:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-09-25 14:36:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 274 transitions. [2020-09-25 14:36:20,929 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 274 transitions. Word has length 71 [2020-09-25 14:36:20,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:20,932 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 274 transitions. [2020-09-25 14:36:20,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 14:36:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 274 transitions. [2020-09-25 14:36:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 14:36:20,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:20,934 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:20,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:36:20,934 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:20,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1095319059, now seen corresponding path program 1 times [2020-09-25 14:36:20,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:20,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559350983] [2020-09-25 14:36:20,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:20,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:21,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:22,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:22,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:36:22,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:36:22,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1900 [2020-09-25 14:36:22,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:22,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:22,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:36:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 14:36:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:36:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:23,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:23,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:23,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:36:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:23,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559350983] [2020-09-25 14:36:23,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:23,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 14:36:23,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060293623] [2020-09-25 14:36:23,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 14:36:23,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 14:36:23,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:36:23,134 INFO L87 Difference]: Start difference. First operand 247 states and 274 transitions. Second operand 16 states. [2020-09-25 14:36:24,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:24,560 INFO L93 Difference]: Finished difference Result 322 states and 352 transitions. [2020-09-25 14:36:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 14:36:24,561 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 14:36:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:24,563 INFO L225 Difference]: With dead ends: 322 [2020-09-25 14:36:24,563 INFO L226 Difference]: Without dead ends: 316 [2020-09-25 14:36:24,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 14:36:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-09-25 14:36:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 256. [2020-09-25 14:36:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-25 14:36:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 284 transitions. [2020-09-25 14:36:24,574 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 284 transitions. Word has length 71 [2020-09-25 14:36:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:24,574 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 284 transitions. [2020-09-25 14:36:24,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 14:36:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 284 transitions. [2020-09-25 14:36:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 14:36:24,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:24,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:24,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:36:24,576 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:24,576 INFO L82 PathProgramCache]: Analyzing trace with hash -58637283, now seen corresponding path program 1 times [2020-09-25 14:36:24,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:24,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958063246] [2020-09-25 14:36:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:28,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:28,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:36:28,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4232 [2020-09-25 14:36:28,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:28,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:36:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:36:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:36:28,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:28,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:28,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:28,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:28,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:28,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:36:28,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:28,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:28,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958063246] [2020-09-25 14:36:28,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:28,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:36:28,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381027927] [2020-09-25 14:36:28,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:36:28,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:28,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:36:28,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:28,927 INFO L87 Difference]: Start difference. First operand 256 states and 284 transitions. Second operand 9 states. [2020-09-25 14:36:29,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:29,557 INFO L93 Difference]: Finished difference Result 314 states and 344 transitions. [2020-09-25 14:36:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:36:29,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-09-25 14:36:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:29,560 INFO L225 Difference]: With dead ends: 314 [2020-09-25 14:36:29,561 INFO L226 Difference]: Without dead ends: 295 [2020-09-25 14:36:29,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:36:29,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-25 14:36:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 256. [2020-09-25 14:36:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-25 14:36:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 283 transitions. [2020-09-25 14:36:29,581 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 283 transitions. Word has length 71 [2020-09-25 14:36:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:29,582 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 283 transitions. [2020-09-25 14:36:29,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:36:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 283 transitions. [2020-09-25 14:36:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 14:36:29,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:29,584 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:29,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:36:29,585 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:29,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1279761314, now seen corresponding path program 2 times [2020-09-25 14:36:29,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:29,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530958134] [2020-09-25 14:36:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:34,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:36:34,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:36:34,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:34,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:36:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 14:36:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:36:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:34,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:34,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:34,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:34,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:36:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:34,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:34,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:34,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530958134] [2020-09-25 14:36:34,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:34,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 14:36:34,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426055345] [2020-09-25 14:36:34,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 14:36:34,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:34,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 14:36:34,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:36:34,962 INFO L87 Difference]: Start difference. First operand 256 states and 283 transitions. Second operand 18 states. [2020-09-25 14:36:36,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:36,691 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2020-09-25 14:36:36,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 14:36:36,692 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-09-25 14:36:36,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:36,694 INFO L225 Difference]: With dead ends: 350 [2020-09-25 14:36:36,694 INFO L226 Difference]: Without dead ends: 344 [2020-09-25 14:36:36,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 14:36:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-09-25 14:36:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 270. [2020-09-25 14:36:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-25 14:36:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 298 transitions. [2020-09-25 14:36:36,705 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 298 transitions. Word has length 76 [2020-09-25 14:36:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:36,706 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 298 transitions. [2020-09-25 14:36:36,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 14:36:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 298 transitions. [2020-09-25 14:36:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 14:36:36,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:36,707 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:36,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:36:36,708 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:36,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:36,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1620912108, now seen corresponding path program 1 times [2020-09-25 14:36:36,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:36,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909235987] [2020-09-25 14:36:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:36,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:37,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:41,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:41,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:36:41,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:36:41,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:41,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:36:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 14:36:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:36:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0