/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/tree-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:57:33,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:57:33,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:57:33,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:57:33,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:57:33,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:57:33,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:57:33,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:57:33,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:57:33,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:57:33,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:57:33,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:57:33,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:57:33,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:57:33,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:57:33,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:57:33,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:57:33,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:57:33,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:57:33,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:57:33,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:57:33,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:57:33,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:57:33,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:57:33,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:57:33,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:57:33,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:57:33,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:57:33,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:57:33,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:57:33,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:57:33,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:57:33,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:57:33,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:57:33,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:57:33,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:57:33,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:57:33,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:57:33,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:57:33,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:57:33,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:57:33,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:57:33,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:57:33,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:57:33,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:57:33,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:57:33,954 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:57:33,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:57:33,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:57:33,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:57:33,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:57:33,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:57:33,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:57:33,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:57:33,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:57:33,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:57:33,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:57:33,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:57:33,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:57:33,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:57:33,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:57:33,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:57:33,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:57:33,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:57:33,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:57:33,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:57:33,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:57:33,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:57:33,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:57:33,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:57:33,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:57:33,966 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:57:34,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:57:34,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:57:34,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:57:34,310 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:57:34,311 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:57:34,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/tree-2.i [2020-10-14 04:57:34,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c58c272e3/0fb784e1c5cc407b888521f27a94e6e9/FLAG2725693c6 [2020-10-14 04:57:34,981 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:57:34,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/tree-2.i [2020-10-14 04:57:35,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c58c272e3/0fb784e1c5cc407b888521f27a94e6e9/FLAG2725693c6 [2020-10-14 04:57:35,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c58c272e3/0fb784e1c5cc407b888521f27a94e6e9 [2020-10-14 04:57:35,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:57:35,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:57:35,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:57:35,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:57:35,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:57:35,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:57:35" (1/1) ... [2020-10-14 04:57:35,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129acc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35, skipping insertion in model container [2020-10-14 04:57:35,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:57:35" (1/1) ... [2020-10-14 04:57:35,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:57:35,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:57:35,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:57:35,785 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:57:35,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:57:35,918 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:57:35,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35 WrapperNode [2020-10-14 04:57:35,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:57:35,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:57:35,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:57:35,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:57:35,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35" (1/1) ... [2020-10-14 04:57:35,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35" (1/1) ... [2020-10-14 04:57:35,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35" (1/1) ... [2020-10-14 04:57:35,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35" (1/1) ... [2020-10-14 04:57:35,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35" (1/1) ... [2020-10-14 04:57:35,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35" (1/1) ... [2020-10-14 04:57:35,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35" (1/1) ... [2020-10-14 04:57:35,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:57:35,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:57:35,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:57:35,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:57:35,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:57:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:57:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:57:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 04:57:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 04:57:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-14 04:57:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2020-10-14 04:57:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure create_tree [2020-10-14 04:57:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tree [2020-10-14 04:57:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:57:36,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:57:36,057 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 04:57:36,057 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 04:57:36,057 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:57:36,057 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:57:36,058 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:57:36,058 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:57:36,058 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:57:36,058 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:57:36,058 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:57:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:57:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:57:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:57:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:57:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:57:36,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:57:36,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:57:36,060 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:57:36,060 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:57:36,060 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:57:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:57:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:57:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:57:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:57:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:57:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:57:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:57:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:57:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:57:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:57:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:57:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:57:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:57:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:57:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:57:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:57:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:57:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:57:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:57:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:57:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:57:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:57:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:57:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:57:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:57:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:57:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:57:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:57:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:57:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:57:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:57:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:57:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:57:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:57:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:57:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-14 04:57:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2020-10-14 04:57:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:57:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:57:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure create_tree [2020-10-14 04:57:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:57:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:57:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:57:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure free_tree [2020-10-14 04:57:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:57:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:57:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:57:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:57:36,707 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:57:36,707 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-14 04:57:36,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:57:36 BoogieIcfgContainer [2020-10-14 04:57:36,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:57:36,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:57:36,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:57:36,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:57:36,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:57:35" (1/3) ... [2020-10-14 04:57:36,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1669be66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:57:36, skipping insertion in model container [2020-10-14 04:57:36,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:35" (2/3) ... [2020-10-14 04:57:36,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1669be66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:57:36, skipping insertion in model container [2020-10-14 04:57:36,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:57:36" (3/3) ... [2020-10-14 04:57:36,720 INFO L109 eAbstractionObserver]: Analyzing ICFG tree-2.i [2020-10-14 04:57:36,731 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:57:36,739 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:57:36,753 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:57:36,778 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:57:36,779 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:57:36,779 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:57:36,779 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:57:36,779 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:57:36,779 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:57:36,779 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:57:36,780 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:57:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-14 04:57:36,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 04:57:36,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:36,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:36,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:36,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1155977206, now seen corresponding path program 1 times [2020-10-14 04:57:36,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:36,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832163736] [2020-10-14 04:57:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:37,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:37,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 04:57:37,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:57:37,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-14 04:57:37,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:37,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:57:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:57:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:37,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:37,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:37,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:37,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:57:37,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:37,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:37,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:37,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:37,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 04:57:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:37,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:37,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:57:37,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:57:37,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:37,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:57:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:37,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:37,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832163736] [2020-10-14 04:57:37,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:37,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:57:37,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649227584] [2020-10-14 04:57:37,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:57:37,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:37,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:57:37,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:57:37,632 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-10-14 04:57:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:37,926 INFO L93 Difference]: Finished difference Result 129 states and 201 transitions. [2020-10-14 04:57:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:57:37,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 04:57:37,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:37,938 INFO L225 Difference]: With dead ends: 129 [2020-10-14 04:57:37,939 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 04:57:37,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:57:37,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 04:57:37,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2020-10-14 04:57:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 04:57:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-14 04:57:37,991 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 19 [2020-10-14 04:57:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:37,991 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-14 04:57:37,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:57:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-14 04:57:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:57:37,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:37,992 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] [2020-10-14 04:57:37,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:57:37,993 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:37,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:37,993 INFO L82 PathProgramCache]: Analyzing trace with hash 292005942, now seen corresponding path program 1 times [2020-10-14 04:57:37,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:37,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938129615] [2020-10-14 04:57:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:38,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:38,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:38,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:57:38,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 04:57:38,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:38,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:57:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 04:57:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:57:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:57:38,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:38,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:38,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:38,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:57:38,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:38,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:38,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 04:57:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:38,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:38,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:38,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:57:38,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:38,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 04:57:38,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:38,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:38,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:57:38,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:38,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:57:38,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 04:57:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:38,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938129615] [2020-10-14 04:57:38,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:38,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:57:38,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399784184] [2020-10-14 04:57:38,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:57:38,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:38,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:57:38,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:57:38,493 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2020-10-14 04:57:38,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:38,920 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2020-10-14 04:57:38,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:57:38,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-14 04:57:38,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:38,922 INFO L225 Difference]: With dead ends: 91 [2020-10-14 04:57:38,922 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 04:57:38,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:57:38,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 04:57:38,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-14 04:57:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 04:57:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-14 04:57:38,933 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 20 [2020-10-14 04:57:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:38,934 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-14 04:57:38,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:57:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-14 04:57:38,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:57:38,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:38,935 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] [2020-10-14 04:57:38,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:57:38,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:38,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:38,936 INFO L82 PathProgramCache]: Analyzing trace with hash 873365677, now seen corresponding path program 1 times [2020-10-14 04:57:38,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:38,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394585236] [2020-10-14 04:57:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:38,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:39,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:39,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:39,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:39,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:57:39,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:57:39,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-10-14 04:57:39,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:39,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:57:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:57:39,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:39,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:39,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:39,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:39,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:39,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:39,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:39,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 04:57:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:39,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:40,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:40,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:57:40,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:40,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:57:40,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:40,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 04:57:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:57:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:40,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394585236] [2020-10-14 04:57:40,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:40,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:57:40,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738784533] [2020-10-14 04:57:40,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:57:40,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:40,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:57:40,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:57:40,030 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 5 states. [2020-10-14 04:57:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:40,230 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-10-14 04:57:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:57:40,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-14 04:57:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:40,232 INFO L225 Difference]: With dead ends: 70 [2020-10-14 04:57:40,232 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 04:57:40,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:57:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 04:57:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-14 04:57:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 04:57:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-14 04:57:40,241 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 26 [2020-10-14 04:57:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:40,241 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-14 04:57:40,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:57:40,242 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-14 04:57:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 04:57:40,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:40,243 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] [2020-10-14 04:57:40,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:57:40,243 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:40,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1403392085, now seen corresponding path program 1 times [2020-10-14 04:57:40,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:40,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239608568] [2020-10-14 04:57:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:40,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:40,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:41,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:41,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 04:57:41,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:57:41,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1183 [2020-10-14 04:57:41,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:41,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:57:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 04:57:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:57:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:41,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:41,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:41,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:41,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 04:57:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:41,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:41,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 04:57:41,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:57:41,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:41,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:41,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-14 04:57:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:57:41,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239608568] [2020-10-14 04:57:41,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:41,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:57:41,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91940636] [2020-10-14 04:57:41,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:57:41,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:41,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:57:41,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:57:41,568 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 7 states. [2020-10-14 04:57:41,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:41,767 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-10-14 04:57:41,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:57:41,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-14 04:57:41,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:41,768 INFO L225 Difference]: With dead ends: 48 [2020-10-14 04:57:41,769 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 04:57:41,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:57:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 04:57:41,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-14 04:57:41,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 04:57:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-14 04:57:41,776 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 29 [2020-10-14 04:57:41,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:41,777 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-14 04:57:41,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:57:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-14 04:57:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:57:41,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:41,778 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] [2020-10-14 04:57:41,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:57:41,779 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:41,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:41,779 INFO L82 PathProgramCache]: Analyzing trace with hash 773909496, now seen corresponding path program 1 times [2020-10-14 04:57:41,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:41,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599585783] [2020-10-14 04:57:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:41,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:42,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:42,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:57:42,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 04:57:42,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:42,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:57:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:57:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:57:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:42,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:42,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:42,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:42,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:42,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:42,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:42,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 04:57:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:42,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:42,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 04:57:42,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:42,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 04:57:42,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:42,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:57:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:57:42,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:42,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599585783] [2020-10-14 04:57:42,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:42,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:57:42,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120074032] [2020-10-14 04:57:42,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:57:42,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:42,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:57:42,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:57:42,553 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 14 states. [2020-10-14 04:57:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:43,442 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2020-10-14 04:57:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:57:43,443 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-14 04:57:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:43,444 INFO L225 Difference]: With dead ends: 93 [2020-10-14 04:57:43,444 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 04:57:43,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:57:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 04:57:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 58. [2020-10-14 04:57:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 04:57:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-10-14 04:57:43,464 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 34 [2020-10-14 04:57:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:43,465 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-10-14 04:57:43,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:57:43,465 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-10-14 04:57:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:57:43,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:43,469 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] [2020-10-14 04:57:43,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:57:43,470 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:43,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:43,470 INFO L82 PathProgramCache]: Analyzing trace with hash 754823974, now seen corresponding path program 1 times [2020-10-14 04:57:43,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:43,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532072533] [2020-10-14 04:57:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:43,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:43,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:43,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:57:43,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 04:57:43,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:43,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:57:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:57:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:57:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:44,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:44,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:44,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:44,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 04:57:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:44,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:44,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 04:57:44,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 04:57:44,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:44,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:57:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:57:44,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:44,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532072533] [2020-10-14 04:57:44,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:44,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:57:44,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512141864] [2020-10-14 04:57:44,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:57:44,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:44,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:57:44,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:57:44,435 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 14 states. [2020-10-14 04:57:45,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:45,131 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-14 04:57:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:57:45,132 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-14 04:57:45,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:45,133 INFO L225 Difference]: With dead ends: 80 [2020-10-14 04:57:45,133 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 04:57:45,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:57:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 04:57:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2020-10-14 04:57:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 04:57:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-14 04:57:45,144 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 34 [2020-10-14 04:57:45,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:45,144 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-14 04:57:45,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:57:45,144 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-14 04:57:45,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 04:57:45,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:45,146 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] [2020-10-14 04:57:45,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:57:45,146 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:45,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:45,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1479587423, now seen corresponding path program 1 times [2020-10-14 04:57:45,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:45,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100781999] [2020-10-14 04:57:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:57:45,166 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:57:45,166 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:57:45,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:57:45,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:57:45 BoogieIcfgContainer [2020-10-14 04:57:45,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:57:45,194 INFO L168 Benchmark]: Toolchain (without parser) took 9940.73 ms. Allocated memory was 147.8 MB in the beginning and 358.6 MB in the end (delta: 210.8 MB). Free memory was 101.6 MB in the beginning and 135.0 MB in the end (delta: -33.4 MB). Peak memory consumption was 177.3 MB. Max. memory is 7.1 GB. [2020-10-14 04:57:45,195 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 04:57:45,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.85 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 170.9 MB in the end (delta: -69.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:57:45,197 INFO L168 Benchmark]: Boogie Preprocessor took 72.87 ms. Allocated memory is still 205.0 MB. Free memory was 170.9 MB in the beginning and 167.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-10-14 04:57:45,197 INFO L168 Benchmark]: RCFGBuilder took 719.43 ms. Allocated memory is still 205.0 MB. Free memory was 167.6 MB in the beginning and 115.6 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:57:45,198 INFO L168 Benchmark]: TraceAbstraction took 8477.58 ms. Allocated memory was 205.0 MB in the beginning and 358.6 MB in the end (delta: 153.6 MB). Free memory was 115.6 MB in the beginning and 135.0 MB in the end (delta: -19.4 MB). Peak memory consumption was 134.2 MB. Max. memory is 7.1 GB. [2020-10-14 04:57:45,202 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.85 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 170.9 MB in the end (delta: -69.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.87 ms. Allocated memory is still 205.0 MB. Free memory was 170.9 MB in the beginning and 167.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 719.43 ms. Allocated memory is still 205.0 MB. Free memory was 167.6 MB in the beginning and 115.6 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8477.58 ms. Allocated memory was 205.0 MB in the beginning and 358.6 MB in the end (delta: 153.6 MB). Free memory was 115.6 MB in the beginning and 135.0 MB in the end (delta: -19.4 MB). Peak memory consumption was 134.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L619] CALL, EXPR create_tree() [L574] struct node *nodelast = ((void *)0); [L575] struct node *node = ((void *)0); [L576] COND TRUE __VERIFIER_nondet_int() [L577] node = malloc(sizeof *node) [L578] COND FALSE !(!node) [L580] node->left = ((void *)0) [L581] node->right = nodelast [L582] COND FALSE !(\read(*nodelast)) [L584] int value = __VERIFIER_nondet_int(); [L585] node->value = value [L586] nodelast = node [L576] COND FALSE !(__VERIFIER_nondet_int()) [L588] COND TRUE node != ((void *)0) [L589] node->left = malloc(sizeof *node) [L590] COND FALSE !(!node) [L592] EXPR node->left [L592] node->left->left = ((void *)0) [L593] EXPR node->left [L593] node->left->right = ((void *)0) [L594] EXPR node->left [L594] node->left->value = 42 [L595] EXPR node->left [L595] node->left->parent = node [L596] EXPR node->right [L596] node = node->right [L588] COND FALSE !(node != ((void *)0)) [L598] return nodelast; [L619] RET, EXPR create_tree() [L619] struct node *data = create_tree(); [L620] COND FALSE !(!data) [L622] CALL inspect(data) [L564] COND FALSE !(!(node)) [L565] COND TRUE node != ((void *)0) [L566] node->left [L566] COND TRUE node->left [L567] EXPR node->left [L567] EXPR node->left->value [L567] COND FALSE !(!(node->left->value == 42)) [L568] EXPR node->value [L568] COND TRUE !(node->value) [L568] CALL fail() [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.3s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 214 SDtfs, 437 SDslu, 381 SDs, 0 SdLazy, 1184 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 52 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 31592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 9/11 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...