/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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-ext3-properties/sll_length_check-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:41:25,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:41:25,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:41:25,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:41:25,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:41:25,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:41:25,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:41:25,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:41:25,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:41:25,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:41:25,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:41:25,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:41:25,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:41:25,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:41:25,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:41:25,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:41:25,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:41:25,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:41:25,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:41:25,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:41:25,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:41:25,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:41:25,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:41:25,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:41:25,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:41:25,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:41:25,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:41:25,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:41:25,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:41:25,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:41:25,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:41:25,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:41:25,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:41:25,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:41:25,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:41:25,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:41:25,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:41:25,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:41:25,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:41:25,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:41:25,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:41:25,304 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 06:41:25,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:41:25,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:41:25,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:41:25,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:41:25,332 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:41:25,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:41:25,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:41:25,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:41:25,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:41:25,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:41:25,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:41:25,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:41:25,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:41:25,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:41:25,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:41:25,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:41:25,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:41:25,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:41:25,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:41:25,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:41:25,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:41:25,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:25,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:41:25,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:41:25,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:41:25,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:41:25,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:41:25,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:41:25,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:41:25,337 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:41:25,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:41:25,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:41:25,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:41:25,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:41:25,850 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:41:25,851 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-25 06:41:25,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/959055c15/9f06202dd07341fea97fff84dbd36c1a/FLAGc00addb69 [2020-09-25 06:41:26,602 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:41:26,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-25 06:41:26,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/959055c15/9f06202dd07341fea97fff84dbd36c1a/FLAGc00addb69 [2020-09-25 06:41:26,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/959055c15/9f06202dd07341fea97fff84dbd36c1a [2020-09-25 06:41:26,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:41:26,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:41:26,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:26,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:41:26,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:41:26,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:26" (1/1) ... [2020-09-25 06:41:26,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391177e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:26, skipping insertion in model container [2020-09-25 06:41:26,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:26" (1/1) ... [2020-09-25 06:41:26,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:41:26,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:41:27,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:27,400 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:41:27,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:27,552 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:41:27,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27 WrapperNode [2020-09-25 06:41:27,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:27,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:41:27,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:41:27,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:41:27,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:41:27,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:41:27,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:41:27,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:41:27,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (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 06:41:27,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:41:27,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:41:27,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 06:41:27,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 06:41:27,706 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 06:41:27,706 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 06:41:27,706 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 06:41:27,706 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 06:41:27,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:41:27,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:41:27,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:41:27,707 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 06:41:27,707 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 06:41:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 06:41:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 06:41:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 06:41:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 06:41:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 06:41:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 06:41:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 06:41:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 06:41:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 06:41:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 06:41:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 06:41:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 06:41:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 06:41:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 06:41:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 06:41:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 06:41:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 06:41:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 06:41:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 06:41:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 06:41:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 06:41:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 06:41:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 06:41:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 06:41:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 06:41:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 06:41:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 06:41:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 06:41:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 06:41:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 06:41:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 06:41:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 06:41:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 06:41:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 06:41:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 06:41:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 06:41:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 06:41:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 06:41:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 06:41:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 06:41:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 06:41:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 06:41:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 06:41:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 06:41:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 06:41:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 06:41:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 06:41:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 06:41:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 06:41:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 06:41:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:41:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 06:41:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 06:41:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:41:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 06:41:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 06:41:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 06:41:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 06:41:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 06:41:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:41:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 06:41:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 06:41:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 06:41:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:41:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 06:41:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 06:41:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 06:41:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 06:41:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 06:41:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 06:41:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 06:41:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 06:41:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 06:41:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 06:41:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 06:41:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 06:41:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 06:41:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 06:41:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 06:41:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 06:41:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 06:41:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 06:41:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 06:41:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 06:41:27,722 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 06:41:27,722 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 06:41:27,722 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 06:41:27,722 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 06:41:27,722 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 06:41:27,722 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 06:41:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 06:41:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 06:41:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 06:41:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 06:41:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 06:41:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 06:41:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 06:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 06:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 06:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 06:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 06:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 06:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 06:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 06:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 06:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 06:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 06:41:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:41:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:41:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:41:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:41:28,067 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 06:41:28,265 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:41:28,265 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 06:41:28,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:28 BoogieIcfgContainer [2020-09-25 06:41:28,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:41:28,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:41:28,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:41:28,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:41:28,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:41:26" (1/3) ... [2020-09-25 06:41:28,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc03d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:28, skipping insertion in model container [2020-09-25 06:41:28,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (2/3) ... [2020-09-25 06:41:28,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc03d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:28, skipping insertion in model container [2020-09-25 06:41:28,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:28" (3/3) ... [2020-09-25 06:41:28,285 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-09-25 06:41:28,294 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:41:28,305 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:41:28,326 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:41:28,354 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:41:28,354 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:41:28,354 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:41:28,354 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:41:28,355 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:41:28,355 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:41:28,355 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:41:28,355 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:41:28,378 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-25 06:41:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 06:41:28,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:28,388 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] [2020-09-25 06:41:28,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1731717969, now seen corresponding path program 1 times [2020-09-25 06:41:28,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:28,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456665579] [2020-09-25 06:41:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:28,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:28,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:28,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 06:41:28,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-25 06:41:28,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:28,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:41:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:28,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:41:28,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:28,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:29,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:29,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:29,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:41:29,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:29,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:29,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:41:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:29,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:29,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:29,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:29,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:41:29,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:29,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:29,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:29,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 06:41:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:29,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:29,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:29,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:41:29,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:29,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:29,122 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 06:41:29,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456665579] [2020-09-25 06:41:29,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:29,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:41:29,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097216914] [2020-09-25 06:41:29,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:41:29,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:29,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:41:29,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:41:29,152 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 4 states. [2020-09-25 06:41:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:29,356 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2020-09-25 06:41:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:41:29,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 06:41:29,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:29,371 INFO L225 Difference]: With dead ends: 154 [2020-09-25 06:41:29,371 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 06:41:29,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:41:29,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 06:41:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2020-09-25 06:41:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 06:41:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-25 06:41:29,430 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 29 [2020-09-25 06:41:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:29,431 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-25 06:41:29,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:41:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-25 06:41:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:41:29,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:29,433 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] [2020-09-25 06:41:29,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:41:29,434 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:29,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:29,434 INFO L82 PathProgramCache]: Analyzing trace with hash 632987872, now seen corresponding path program 1 times [2020-09-25 06:41:29,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:29,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441840353] [2020-09-25 06:41:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:29,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:30,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 06:41:30,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:41:30,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-09-25 06:41:30,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:30,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:41:30,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:30,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:30,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:30,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:41:30,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:30,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:30,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:30,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 06:41:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:30,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:30,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 06:41:30,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:30,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:41:30,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:30,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 06:41:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:30,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:30,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:30,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:30,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:41:30,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:30,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:30,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:30,289 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 06:41:30,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441840353] [2020-09-25 06:41:30,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:30,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:41:30,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13332311] [2020-09-25 06:41:30,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:41:30,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:30,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:41:30,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:41:30,295 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 7 states. [2020-09-25 06:41:30,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:30,683 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-09-25 06:41:30,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:41:30,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 06:41:30,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:30,686 INFO L225 Difference]: With dead ends: 114 [2020-09-25 06:41:30,686 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 06:41:30,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:30,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 06:41:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 67. [2020-09-25 06:41:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 06:41:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-09-25 06:41:30,702 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 33 [2020-09-25 06:41:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:30,702 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-09-25 06:41:30,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:41:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-09-25 06:41:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 06:41:30,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:30,705 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] [2020-09-25 06:41:30,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:41:30,706 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:30,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2090477770, now seen corresponding path program 1 times [2020-09-25 06:41:30,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:30,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309904469] [2020-09-25 06:41:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:31,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:31,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:33,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 06:41:33,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:41:33,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2580 [2020-09-25 06:41:33,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:33,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:41:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:41:33,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:33,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:33,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:33,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:33,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:33,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:33,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:33,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:33,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:41:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:33,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:33,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:33,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:41:33,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:33,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:33,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:41:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:33,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:33,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:33,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:33,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:33,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:33,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:33,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:33,405 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 06:41:33,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309904469] [2020-09-25 06:41:33,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:33,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:41:33,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759076135] [2020-09-25 06:41:33,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:41:33,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:33,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:41:33,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:41:33,407 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 6 states. [2020-09-25 06:41:33,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:33,663 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2020-09-25 06:41:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:41:33,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-09-25 06:41:33,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:33,665 INFO L225 Difference]: With dead ends: 143 [2020-09-25 06:41:33,666 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 06:41:33,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:41:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 06:41:33,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 67. [2020-09-25 06:41:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 06:41:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-09-25 06:41:33,678 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 41 [2020-09-25 06:41:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:33,678 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-09-25 06:41:33,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:41:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-09-25 06:41:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 06:41:33,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:33,680 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] [2020-09-25 06:41:33,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:41:33,680 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash 226602169, now seen corresponding path program 1 times [2020-09-25 06:41:33,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:33,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708303050] [2020-09-25 06:41:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:34,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:34,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:41:34,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:41:34,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-09-25 06:41:34,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:34,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:41:34,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:34,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:34,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:34,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:34,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:34,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:34,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:34,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:34,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:41:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:34,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:34,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:34,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:41:34,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:34,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:41:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 06:41:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:34,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:34,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:34,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:34,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:34,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:34,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:34,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:34,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708303050] [2020-09-25 06:41:34,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:34,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:41:34,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872355221] [2020-09-25 06:41:34,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:41:34,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:34,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:41:34,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:34,708 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 9 states. [2020-09-25 06:41:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:35,172 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-09-25 06:41:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:41:35,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-09-25 06:41:35,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:35,175 INFO L225 Difference]: With dead ends: 135 [2020-09-25 06:41:35,175 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 06:41:35,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:41:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 06:41:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 77. [2020-09-25 06:41:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 06:41:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-09-25 06:41:35,200 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 43 [2020-09-25 06:41:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:35,203 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-09-25 06:41:35,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:41:35,203 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-09-25 06:41:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 06:41:35,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:35,206 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] [2020-09-25 06:41:35,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:41:35,207 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:35,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:35,207 INFO L82 PathProgramCache]: Analyzing trace with hash 360366586, now seen corresponding path program 1 times [2020-09-25 06:41:35,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:35,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802926423] [2020-09-25 06:41:35,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:35,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:37,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:41:37,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:41:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2577 [2020-09-25 06:41:37,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:37,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:41:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:37,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:37,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:37,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:37,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:37,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:37,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:37,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:37,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:37,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:37,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:41:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:37,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:41:37,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:37,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 06:41:37,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:37,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:41:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 06:41:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:38,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:38,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:38,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:38,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:38,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:38,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802926423] [2020-09-25 06:41:38,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:38,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:41:38,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520667028] [2020-09-25 06:41:38,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:41:38,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:38,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:41:38,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:38,032 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 9 states. [2020-09-25 06:41:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:38,508 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-09-25 06:41:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:41:38,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-09-25 06:41:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:38,513 INFO L225 Difference]: With dead ends: 135 [2020-09-25 06:41:38,513 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 06:41:38,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:41:38,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 06:41:38,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 92. [2020-09-25 06:41:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 06:41:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-09-25 06:41:38,535 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 44 [2020-09-25 06:41:38,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:38,535 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-09-25 06:41:38,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:41:38,536 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-09-25 06:41:38,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 06:41:38,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:38,541 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:38,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:41:38,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:38,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1391720975, now seen corresponding path program 2 times [2020-09-25 06:41:38,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:38,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312623614] [2020-09-25 06:41:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:39,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:39,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:41,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:41,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 06:41:41,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:41:41,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2907 [2020-09-25 06:41:41,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:41,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 06:41:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:41:41,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:41,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:41,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:41,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:41,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:41,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:41,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:41,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:41,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 06:41:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:41,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:41,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:41,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:41,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:41,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:41:41,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:41,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:41,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:41:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:41,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:41,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:41,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:41,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:41,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:41,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:41:41,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312623614] [2020-09-25 06:41:41,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:41,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:41:41,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545832915] [2020-09-25 06:41:41,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:41:41,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:41,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:41:41,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:41:41,550 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 5 states. [2020-09-25 06:41:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:41,712 INFO L93 Difference]: Finished difference Result 165 states and 183 transitions. [2020-09-25 06:41:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:41:41,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-25 06:41:41,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:41,714 INFO L225 Difference]: With dead ends: 165 [2020-09-25 06:41:41,714 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 06:41:41,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:41:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 06:41:41,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2020-09-25 06:41:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 06:41:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2020-09-25 06:41:41,748 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 51 [2020-09-25 06:41:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:41,748 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2020-09-25 06:41:41,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:41:41,748 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2020-09-25 06:41:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 06:41:41,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:41,750 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] [2020-09-25 06:41:41,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:41:41,751 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:41,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2119311204, now seen corresponding path program 1 times [2020-09-25 06:41:41,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:41,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969037604] [2020-09-25 06:41:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:41,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:41,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:42,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:42,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:46,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 06:41:46,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:41:46,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:41:46,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:46,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:41:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:41:46,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:46,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:46,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:46,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:46,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:41:46,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:46,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:46,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:46,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:41:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:46,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:46,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:41:46,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:46,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:41:46,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:46,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:41:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 06:41:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:46,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:46,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:46,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:46,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:47,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969037604] [2020-09-25 06:41:47,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:47,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:41:47,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815519749] [2020-09-25 06:41:47,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:41:47,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:47,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:41:47,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:47,003 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 11 states. [2020-09-25 06:41:47,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:47,539 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2020-09-25 06:41:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:41:47,540 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-25 06:41:47,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:47,543 INFO L225 Difference]: With dead ends: 129 [2020-09-25 06:41:47,543 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 06:41:47,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:41:47,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 06:41:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 68. [2020-09-25 06:41:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 06:41:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-09-25 06:41:47,557 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 52 [2020-09-25 06:41:47,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:47,557 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-09-25 06:41:47,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:41:47,558 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-09-25 06:41:47,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 06:41:47,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:47,561 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:41:47,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:41:47,561 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:47,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:47,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1801872195, now seen corresponding path program 2 times [2020-09-25 06:41:47,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:47,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591513327] [2020-09-25 06:41:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:47,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:47,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:49,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 06:41:49,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:41:49,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2081 [2020-09-25 06:41:49,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:49,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:41:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:49,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:41:49,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:49,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:49,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:49,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:49,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:49,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:41:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:49,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:41:49,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 06:41:49,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:49,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:41:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:41:49,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 06:41:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:49,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:49,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:49,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:49,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:49,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 06:41:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:49,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591513327] [2020-09-25 06:41:49,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:49,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:41:49,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634680442] [2020-09-25 06:41:49,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:41:49,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:49,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:41:49,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:49,943 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 11 states. [2020-09-25 06:41:50,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:50,459 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2020-09-25 06:41:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:41:50,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-25 06:41:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:50,461 INFO L225 Difference]: With dead ends: 125 [2020-09-25 06:41:50,461 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 06:41:50,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:41:50,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 06:41:50,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2020-09-25 06:41:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 06:41:50,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2020-09-25 06:41:50,477 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 53 [2020-09-25 06:41:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:50,477 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2020-09-25 06:41:50,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:41:50,477 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2020-09-25 06:41:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 06:41:50,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:50,478 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:41:50,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:41:50,479 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:50,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:50,479 INFO L82 PathProgramCache]: Analyzing trace with hash -655327975, now seen corresponding path program 2 times [2020-09-25 06:41:50,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:50,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451882251] [2020-09-25 06:41:50,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:50,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:50,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:51,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:55,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 06:41:55,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:41:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:41:55,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:55,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:41:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 06:41:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 06:41:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:55,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:55,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:55,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:41:55,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:55,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:55,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:41:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:55,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:41:55,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:55,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 06:41:55,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:55,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:55,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:41:55,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:55,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:41:55,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:55,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:41:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:55,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:55,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:41:55,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:55,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:41:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 06:41:55,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451882251] [2020-09-25 06:41:55,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:55,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 06:41:55,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755562079] [2020-09-25 06:41:55,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:41:55,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:55,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:41:55,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:55,895 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 11 states. [2020-09-25 06:41:56,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:56,396 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2020-09-25 06:41:56,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:41:56,397 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-09-25 06:41:56,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:56,398 INFO L225 Difference]: With dead ends: 100 [2020-09-25 06:41:56,398 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 06:41:56,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:41:56,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 06:41:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2020-09-25 06:41:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 06:41:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2020-09-25 06:41:56,408 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 61 [2020-09-25 06:41:56,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:56,408 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2020-09-25 06:41:56,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:41:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2020-09-25 06:41:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 06:41:56,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:56,410 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:41:56,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:41:56,410 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:56,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:56,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1218764182, now seen corresponding path program 1 times [2020-09-25 06:41:56,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:56,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439635001] [2020-09-25 06:41:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:56,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:56,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:01,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:01,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:42:01,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:42:01,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:01,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:42:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:42:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:42:01,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:01,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:01,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:01,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:01,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:01,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:42:01,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:01,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:01,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:42:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:01,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:01,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:01,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:42:01,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:01,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:42:01,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:01,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 06:42:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:01,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:42:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:42:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:01,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:01,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:42:01,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:01,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:42:01,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:01,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:42:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 06:42:01,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439635001] [2020-09-25 06:42:01,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:01,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:42:01,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141687839] [2020-09-25 06:42:01,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:42:01,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:01,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:42:01,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:42:01,601 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand 8 states. [2020-09-25 06:42:02,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:02,034 INFO L93 Difference]: Finished difference Result 181 states and 193 transitions. [2020-09-25 06:42:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:42:02,034 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-09-25 06:42:02,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:02,035 INFO L225 Difference]: With dead ends: 181 [2020-09-25 06:42:02,036 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 06:42:02,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:42:02,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 06:42:02,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 94. [2020-09-25 06:42:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 06:42:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-09-25 06:42:02,047 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 68 [2020-09-25 06:42:02,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:02,047 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-09-25 06:42:02,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:42:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-09-25 06:42:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 06:42:02,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:02,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:02,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:42:02,049 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:02,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:02,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1187742581, now seen corresponding path program 1 times [2020-09-25 06:42:02,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:02,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485501381] [2020-09-25 06:42:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:02,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:42:02,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:42:02,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-09-25 06:42:02,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:02,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:42:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 06:42:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:42:02,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:02,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:02,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:02,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:42:02,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:02,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:42:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:03,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:03,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 06:42:03,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:03,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 06:42:03,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:03,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:42:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 06:42:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:03,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:03,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:03,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:03,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:42:03,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:03,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 06:42:03,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:03,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:03,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:03,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:42:03,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:42:03,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:42:03,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485501381] [2020-09-25 06:42:03,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:03,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:42:03,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729171556] [2020-09-25 06:42:03,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:42:03,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:03,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:42:03,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:42:03,303 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 16 states. [2020-09-25 06:42:04,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:04,143 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2020-09-25 06:42:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 06:42:04,143 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-09-25 06:42:04,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:04,145 INFO L225 Difference]: With dead ends: 114 [2020-09-25 06:42:04,145 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 06:42:04,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2020-09-25 06:42:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 06:42:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2020-09-25 06:42:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 06:42:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2020-09-25 06:42:04,157 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 69 [2020-09-25 06:42:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:04,158 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2020-09-25 06:42:04,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:42:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2020-09-25 06:42:04,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 06:42:04,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:04,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:04,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:42:04,165 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:04,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:04,165 INFO L82 PathProgramCache]: Analyzing trace with hash 979580858, now seen corresponding path program 2 times [2020-09-25 06:42:04,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:04,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201710767] [2020-09-25 06:42:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:04,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:09,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:09,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:42:09,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:42:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:42:09,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:09,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:42:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:42:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 06:42:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:09,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:09,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:09,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:42:09,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:09,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:09,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:42:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:09,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:09,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:09,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 06:42:09,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:42:09,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 06:42:09,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:09,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:42:09,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:09,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:09,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:09,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:09,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:42:09,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:09,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 06:42:09,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:09,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:42:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:42:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 06:42:09,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201710767] [2020-09-25 06:42:09,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:09,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:42:09,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102923049] [2020-09-25 06:42:09,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:42:09,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:09,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:42:09,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:09,718 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 12 states. [2020-09-25 06:42:10,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:10,395 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2020-09-25 06:42:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:42:10,395 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-09-25 06:42:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:10,397 INFO L225 Difference]: With dead ends: 126 [2020-09-25 06:42:10,398 INFO L226 Difference]: Without dead ends: 121 [2020-09-25 06:42:10,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-09-25 06:42:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-25 06:42:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2020-09-25 06:42:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 06:42:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2020-09-25 06:42:10,407 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 76 [2020-09-25 06:42:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:10,407 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2020-09-25 06:42:10,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:42:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2020-09-25 06:42:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 06:42:10,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:10,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:42:10,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 06:42:10,409 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:10,409 INFO L82 PathProgramCache]: Analyzing trace with hash -446623556, now seen corresponding path program 1 times [2020-09-25 06:42:10,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:10,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501439616] [2020-09-25 06:42:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:10,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:10,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:42:10,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:10,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-25 06:42:10,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:10,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:42:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:42:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:42:10,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:10,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:10,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:10,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:10,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:10,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:42:10,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:10,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:10,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:10,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:10,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:10,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:10,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:42:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:10,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:42:10,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 06:42:10,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:10,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:42:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:42:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:42:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:10,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 06:42:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:10,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:11,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:11,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:42:11,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:11,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:42:11,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:11,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:42:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:11,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 06:42:11,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501439616] [2020-09-25 06:42:11,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:11,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 06:42:11,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484270422] [2020-09-25 06:42:11,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:42:11,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:11,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:42:11,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:42:11,015 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 13 states. [2020-09-25 06:42:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:11,631 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2020-09-25 06:42:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 06:42:11,632 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-09-25 06:42:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:11,633 INFO L225 Difference]: With dead ends: 164 [2020-09-25 06:42:11,633 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 06:42:11,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2020-09-25 06:42:11,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 06:42:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2020-09-25 06:42:11,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 06:42:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2020-09-25 06:42:11,641 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 77 [2020-09-25 06:42:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:11,642 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 118 transitions. [2020-09-25 06:42:11,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:42:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 118 transitions. [2020-09-25 06:42:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 06:42:11,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:11,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:11,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 06:42:11,644 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:11,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:11,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1305863211, now seen corresponding path program 3 times [2020-09-25 06:42:11,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:11,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148905766] [2020-09-25 06:42:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:42:11,663 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:42:11,663 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:42:11,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 06:42:11,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:42:11 BoogieIcfgContainer [2020-09-25 06:42:11,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:42:11,703 INFO L168 Benchmark]: Toolchain (without parser) took 44881.29 ms. Allocated memory was 138.9 MB in the beginning and 494.4 MB in the end (delta: 355.5 MB). Free memory was 100.8 MB in the beginning and 110.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 345.8 MB. Max. memory is 7.1 GB. [2020-09-25 06:42:11,704 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 06:42:11,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.30 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 169.9 MB in the end (delta: -69.7 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-09-25 06:42:11,705 INFO L168 Benchmark]: Boogie Preprocessor took 71.03 ms. Allocated memory is still 202.9 MB. Free memory was 169.9 MB in the beginning and 167.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:42:11,716 INFO L168 Benchmark]: RCFGBuilder took 644.71 ms. Allocated memory is still 202.9 MB. Free memory was 166.5 MB in the beginning and 120.7 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2020-09-25 06:42:11,717 INFO L168 Benchmark]: TraceAbstraction took 43423.82 ms. Allocated memory was 202.9 MB in the beginning and 494.4 MB in the end (delta: 291.5 MB). Free memory was 120.7 MB in the beginning and 110.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 301.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:42:11,723 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 729.30 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 169.9 MB in the end (delta: -69.7 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.03 ms. Allocated memory is still 202.9 MB. Free memory was 169.9 MB in the beginning and 167.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 644.71 ms. Allocated memory is still 202.9 MB. Free memory was 166.5 MB in the beginning and 120.7 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43423.82 ms. Allocated memory was 202.9 MB in the beginning and 494.4 MB in the end (delta: 291.5 MB). Free memory was 120.7 MB in the beginning and 110.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 301.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] RET, EXPR sll_create(len + 1) [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [L597] RET, EXPR sll_length(s) [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 43.3s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 780 SDtfs, 1603 SDslu, 1824 SDs, 0 SdLazy, 3750 SolverSat, 224 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 273 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 239 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 36.3s InterpolantComputationTime, 780 NumberOfCodeBlocks, 780 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 684 ConstructedInterpolants, 0 QuantifiedInterpolants, 110686 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 112/160 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...