/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:34:33,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:34:33,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:34:33,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:34:33,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:34:33,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:34:33,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:34:33,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:34:33,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:34:33,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:34:33,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:34:33,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:34:33,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:34:33,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:34:33,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:34:33,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:34:33,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:34:33,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:34:33,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:34:33,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:34:33,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:34:33,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:34:33,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:34:33,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:34:34,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:34:34,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:34:34,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:34:34,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:34:34,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:34:34,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:34:34,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:34:34,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:34:34,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:34:34,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:34:34,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:34:34,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:34:34,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:34:34,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:34:34,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:34:34,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:34:34,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:34:34,030 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 23:34:34,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:34:34,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:34:34,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:34:34,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:34:34,075 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:34:34,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:34:34,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:34:34,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:34:34,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:34:34,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:34:34,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:34:34,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:34:34,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:34:34,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:34:34,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:34:34,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:34:34,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:34:34,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:34:34,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:34:34,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:34:34,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:34:34,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:34:34,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:34:34,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:34:34,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:34:34,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:34:34,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:34:34,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:34:34,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:34:34,081 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:34:34,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:34:34,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:34:34,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:34:34,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:34:34,419 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:34:34,420 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-14 23:34:34,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd971ec5/5fec978bd11d4f42a611ddeb240f2ff5/FLAG2af2b4787 [2020-10-14 23:34:35,021 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:34:35,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-14 23:34:35,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd971ec5/5fec978bd11d4f42a611ddeb240f2ff5/FLAG2af2b4787 [2020-10-14 23:34:35,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd971ec5/5fec978bd11d4f42a611ddeb240f2ff5 [2020-10-14 23:34:35,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:34:35,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:34:35,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:34:35,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:34:35,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:34:35,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:34:35" (1/1) ... [2020-10-14 23:34:35,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650d469c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35, skipping insertion in model container [2020-10-14 23:34:35,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:34:35" (1/1) ... [2020-10-14 23:34:35,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:34:35,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:34:35,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:34:35,853 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:34:35,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:34:35,956 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:34:35,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35 WrapperNode [2020-10-14 23:34:35,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:34:35,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:34:35,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:34:35,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:34:35,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35" (1/1) ... [2020-10-14 23:34:35,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35" (1/1) ... [2020-10-14 23:34:35,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35" (1/1) ... [2020-10-14 23:34:35,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35" (1/1) ... [2020-10-14 23:34:36,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35" (1/1) ... [2020-10-14 23:34:36,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35" (1/1) ... [2020-10-14 23:34:36,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35" (1/1) ... [2020-10-14 23:34:36,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:34:36,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:34:36,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:34:36,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:34:36,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35" (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 23:34:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:34:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:34:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:34:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:34:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-14 23:34:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-14 23:34:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-14 23:34:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:34:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:34:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:34:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:34:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:34:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:34:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:34:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:34:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:34:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:34:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:34:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:34:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:34:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:34:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:34:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:34:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:34:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:34:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:34:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:34:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:34:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:34:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-14 23:34:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-14 23:34:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-14 23:34:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:34:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:34:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:34:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:34:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:34:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:34:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:34:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:34:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:34:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:34:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:34:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:34:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:34:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:34:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:34:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:34:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:34:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:34:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:34:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:34:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:34:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:34:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:34:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:34:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:34:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:34:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:34:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:34:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:34:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:34:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:34:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:34:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:34:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:34:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:34:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:34:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:34:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:34:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:34:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:34:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:34:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:34:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:34:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:34:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:34:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:34:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:34:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:34:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:34:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:34:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:34:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:34:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:34:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:34:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:34:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:34:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:34:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:34:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:34:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:34:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:34:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:34:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:34:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:34:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:34:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:34:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:34:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:34:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:34:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:34:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:34:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:34:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:34:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:34:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:34:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:34:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:34:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:34:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:34:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:34:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:34:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:34:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:34:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:34:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:34:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:34:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:34:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:34:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:34:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:34:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:34:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:34:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:34:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:34:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:34:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:34:36,449 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:34:36,590 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:34:36,591 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 23:34:36,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:34:36 BoogieIcfgContainer [2020-10-14 23:34:36,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:34:36,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:34:36,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:34:36,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:34:36,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:34:35" (1/3) ... [2020-10-14 23:34:36,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3599f260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:34:36, skipping insertion in model container [2020-10-14 23:34:36,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:34:35" (2/3) ... [2020-10-14 23:34:36,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3599f260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:34:36, skipping insertion in model container [2020-10-14 23:34:36,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:34:36" (3/3) ... [2020-10-14 23:34:36,604 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-10-14 23:34:36,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:34:36,635 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:34:36,649 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:34:36,670 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:34:36,670 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:34:36,670 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:34:36,670 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:34:36,671 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:34:36,671 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:34:36,671 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:34:36,671 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:34:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-14 23:34:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 23:34:36,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:36,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:34:36,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:36,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:36,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1184417696, now seen corresponding path program 1 times [2020-10-14 23:34:36,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:36,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628935277] [2020-10-14 23:34:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:37,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:37,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:34:37,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:34:37,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 23:34:37,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:37,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:34:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:34:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:34:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:34:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:37,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:37,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:37,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:37,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:37,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:34:37,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:37,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:37,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:37,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:37,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:37,298 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 23:34:37,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628935277] [2020-10-14 23:34:37,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:34:37,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:34:37,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923573299] [2020-10-14 23:34:37,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:34:37,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:37,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:34:37,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:34:37,328 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-10-14 23:34:37,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:37,600 INFO L93 Difference]: Finished difference Result 73 states and 103 transitions. [2020-10-14 23:34:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:34:37,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-14 23:34:37,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:37,611 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:34:37,611 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 23:34:37,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:34:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 23:34:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2020-10-14 23:34:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:34:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-14 23:34:37,658 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 15 [2020-10-14 23:34:37,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:37,659 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-14 23:34:37,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:34:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-14 23:34:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:34:37,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:37,660 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:34:37,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:34:37,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:37,661 INFO L82 PathProgramCache]: Analyzing trace with hash 771025649, now seen corresponding path program 1 times [2020-10-14 23:34:37,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:37,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829511385] [2020-10-14 23:34:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:37,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:37,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:34:37,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:37,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 23:34:37,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:37,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:34:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:34:37,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:34:37,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:37,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:37,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:37,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:34:37,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:37,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:37,823 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 23:34:37,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829511385] [2020-10-14 23:34:37,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:34:37,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:34:37,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841585726] [2020-10-14 23:34:37,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:34:37,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:37,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:34:37,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:34:37,827 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-14 23:34:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:37,954 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-14 23:34:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:34:37,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-14 23:34:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:37,956 INFO L225 Difference]: With dead ends: 50 [2020-10-14 23:34:37,956 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:34:37,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:34:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:34:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-10-14 23:34:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 23:34:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-14 23:34:37,965 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2020-10-14 23:34:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:37,965 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-14 23:34:37,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:34:37,966 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-14 23:34:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:34:37,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:37,967 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:34:37,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:34:37,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:37,968 INFO L82 PathProgramCache]: Analyzing trace with hash -472715872, now seen corresponding path program 1 times [2020-10-14 23:34:37,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:37,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979284456] [2020-10-14 23:34:37,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:38,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:38,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:34:38,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:38,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 23:34:38,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:38,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:34:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:34:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:34:38,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:38,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:38,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:38,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:38,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:34:38,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:38,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:38,136 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 23:34:38,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979284456] [2020-10-14 23:34:38,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:34:38,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:34:38,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463070548] [2020-10-14 23:34:38,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:34:38,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:38,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:34:38,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:34:38,141 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2020-10-14 23:34:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:38,270 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-10-14 23:34:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:34:38,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-14 23:34:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:38,272 INFO L225 Difference]: With dead ends: 48 [2020-10-14 23:34:38,273 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 23:34:38,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:34:38,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 23:34:38,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2020-10-14 23:34:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 23:34:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-14 23:34:38,279 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2020-10-14 23:34:38,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:38,280 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-14 23:34:38,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:34:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-14 23:34:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:34:38,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:38,281 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] [2020-10-14 23:34:38,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:34:38,282 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:38,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:38,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1962636917, now seen corresponding path program 1 times [2020-10-14 23:34:38,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:38,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287712725] [2020-10-14 23:34:38,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:38,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:38,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:38,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:34:38,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:34:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-14 23:34:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:38,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:34:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:34:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:34:38,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:38,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:38,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:38,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:38,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:34:38,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:38,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:38,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:34:38,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287712725] [2020-10-14 23:34:38,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:34:38,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:34:38,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726570455] [2020-10-14 23:34:38,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:34:38,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:38,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:34:38,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:34:38,781 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 10 states. [2020-10-14 23:34:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:39,026 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-10-14 23:34:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:34:39,026 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-14 23:34:39,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:39,029 INFO L225 Difference]: With dead ends: 64 [2020-10-14 23:34:39,030 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 23:34:39,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:34:39,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 23:34:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 36. [2020-10-14 23:34:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 23:34:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-14 23:34:39,038 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 23 [2020-10-14 23:34:39,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:39,038 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-14 23:34:39,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:34:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-14 23:34:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:34:39,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:39,040 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] [2020-10-14 23:34:39,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:34:39,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:39,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:39,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1888593434, now seen corresponding path program 1 times [2020-10-14 23:34:39,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:39,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837018141] [2020-10-14 23:34:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:34:39,055 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:34:39,055 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:34:39,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:34:39,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:34:39 BoogieIcfgContainer [2020-10-14 23:34:39,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:34:39,078 INFO L168 Benchmark]: Toolchain (without parser) took 3806.47 ms. Allocated memory was 148.4 MB in the beginning and 243.3 MB in the end (delta: 94.9 MB). Free memory was 103.1 MB in the beginning and 108.4 MB in the end (delta: -5.3 MB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:34:39,079 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 23:34:39,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.15 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 172.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:34:39,081 INFO L168 Benchmark]: Boogie Preprocessor took 61.08 ms. Allocated memory is still 205.5 MB. Free memory was 172.1 MB in the beginning and 169.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:34:39,082 INFO L168 Benchmark]: RCFGBuilder took 576.88 ms. Allocated memory is still 205.5 MB. Free memory was 169.3 MB in the beginning and 126.1 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:34:39,083 INFO L168 Benchmark]: TraceAbstraction took 2478.81 ms. Allocated memory was 205.5 MB in the beginning and 243.3 MB in the end (delta: 37.7 MB). Free memory was 125.1 MB in the beginning and 108.4 MB in the end (delta: 16.7 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:34:39,086 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.15 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 172.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.08 ms. Allocated memory is still 205.5 MB. Free memory was 172.1 MB in the beginning and 169.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 576.88 ms. Allocated memory is still 205.5 MB. Free memory was 169.3 MB in the beginning and 126.1 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2478.81 ms. Allocated memory was 205.5 MB in the beginning and 243.3 MB in the end (delta: 37.7 MB). Free memory was 125.1 MB in the beginning and 108.4 MB in the end (delta: 16.7 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) [L524] COND FALSE !(a == 0) [L525] p = a [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) [L528] p->h = 1 [L532] t = (List) malloc(sizeof(struct node)) [L533] COND FALSE !(t == 0) [L534] p->n = t [L535] EXPR p->n [L535] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 [L538] p = a [L539] COND TRUE \read(flag) [L540] EXPR p->h [L540] COND FALSE !(p->h == 2) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 119 SDslu, 270 SDs, 0 SdLazy, 356 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, 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, 4 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 6238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 4/6 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...