/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:57:17,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:57:17,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:57:17,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:57:17,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:57:17,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:57:17,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:57:17,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:57:17,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:57:17,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:57:17,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:57:17,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:57:17,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:57:17,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:57:17,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:57:17,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:57:17,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:57:17,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:57:17,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:57:17,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:57:17,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:57:17,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:57:17,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:57:17,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:57:17,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:57:17,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:57:17,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:57:17,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:57:17,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:57:17,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:57:17,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:57:17,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:57:17,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:57:17,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:57:17,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:57:17,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:57:17,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:57:17,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:57:17,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:57:17,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:57:18,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:57:18,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:57:18,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:57:18,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:57:18,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:57:18,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:57:18,049 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:57:18,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:57:18,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:57:18,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:57:18,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:57:18,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:57:18,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:57:18,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:57:18,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:57:18,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:57:18,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:57:18,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:57:18,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:57:18,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:57:18,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:57:18,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:57:18,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:57:18,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:57:18,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:57:18,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:57:18,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:57:18,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:57:18,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:57:18,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:57:18,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:57:18,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:57:18,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:57:18,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:57:18,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:57:18,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:57:18,520 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:57:18,521 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-25 00:57:18,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/584b745bc/bac9347c11b246c6be7c8908740f95d2/FLAG04150446a [2020-09-25 00:57:19,187 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:57:19,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-25 00:57:19,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/584b745bc/bac9347c11b246c6be7c8908740f95d2/FLAG04150446a [2020-09-25 00:57:19,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/584b745bc/bac9347c11b246c6be7c8908740f95d2 [2020-09-25 00:57:19,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:57:19,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:57:19,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:57:19,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:57:19,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:57:19,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:57:19" (1/1) ... [2020-09-25 00:57:19,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdfc9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:19, skipping insertion in model container [2020-09-25 00:57:19,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:57:19" (1/1) ... [2020-09-25 00:57:19,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:57:19,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:57:20,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:57:20,022 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:57:20,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:57:20,151 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:57:20,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:20 WrapperNode [2020-09-25 00:57:20,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:57:20,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:57:20,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:57:20,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:57:20,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:20" (1/1) ... [2020-09-25 00:57:20,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:20" (1/1) ... [2020-09-25 00:57:20,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:20" (1/1) ... [2020-09-25 00:57:20,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:20" (1/1) ... [2020-09-25 00:57:20,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:20" (1/1) ... [2020-09-25 00:57:20,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:20" (1/1) ... [2020-09-25 00:57:20,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:20" (1/1) ... [2020-09-25 00:57:20,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:57:20,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:57:20,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:57:20,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:57:20,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:57:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:57:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:57:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 00:57:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 00:57:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 00:57:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 00:57:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 00:57:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 00:57:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:57:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:57:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:57:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 00:57:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 00:57:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 00:57:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 00:57:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 00:57:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 00:57:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 00:57:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 00:57:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 00:57:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 00:57:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 00:57:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 00:57:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 00:57:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 00:57:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 00:57:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 00:57:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 00:57:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 00:57:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 00:57:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 00:57:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 00:57:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 00:57:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 00:57:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 00:57:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 00:57:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 00:57:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 00:57:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 00:57:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 00:57:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 00:57:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 00:57:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 00:57:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 00:57:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 00:57:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 00:57:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 00:57:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 00:57:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 00:57:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 00:57:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 00:57:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 00:57:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 00:57:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 00:57:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 00:57:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 00:57:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 00:57:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 00:57:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 00:57:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 00:57:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 00:57:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 00:57:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 00:57:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 00:57:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 00:57:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 00:57:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:57:20,330 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:57:20,330 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 00:57:20,330 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:57:20,330 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 00:57:20,330 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 00:57:20,330 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 00:57:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 00:57:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:57:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 00:57:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 00:57:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 00:57:20,331 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 00:57:20,332 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 00:57:20,332 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 00:57:20,332 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 00:57:20,332 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 00:57:20,332 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 00:57:20,332 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 00:57:20,332 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 00:57:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 00:57:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 00:57:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 00:57:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 00:57:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 00:57:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 00:57:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 00:57:20,334 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 00:57:20,334 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 00:57:20,334 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 00:57:20,334 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 00:57:20,334 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 00:57:20,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 00:57:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 00:57:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 00:57:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 00:57:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 00:57:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 00:57:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 00:57:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 00:57:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 00:57:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 00:57:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 00:57:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 00:57:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 00:57:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 00:57:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 00:57:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 00:57:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 00:57:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 00:57:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 00:57:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 00:57:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 00:57:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:57:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:57:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:57:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 00:57:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 00:57:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:57:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:57:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:57:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:57:20,720 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 00:57:20,920 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:57:20,920 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 00:57:20,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:57:20 BoogieIcfgContainer [2020-09-25 00:57:20,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:57:20,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:57:20,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:57:20,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:57:20,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:57:19" (1/3) ... [2020-09-25 00:57:20,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106a7e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:57:20, skipping insertion in model container [2020-09-25 00:57:20,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:20" (2/3) ... [2020-09-25 00:57:20,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106a7e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:57:20, skipping insertion in model container [2020-09-25 00:57:20,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:57:20" (3/3) ... [2020-09-25 00:57:20,935 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-09-25 00:57:20,946 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:57:20,956 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:57:20,978 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:57:21,007 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:57:21,008 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:57:21,008 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:57:21,008 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:57:21,008 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:57:21,008 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:57:21,008 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:57:21,008 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:57:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-09-25 00:57:21,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 00:57:21,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:21,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:21,042 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:21,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:21,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1409516089, now seen corresponding path program 1 times [2020-09-25 00:57:21,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:21,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193835679] [2020-09-25 00:57:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:21,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:21,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:21,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:21,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:57:21,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:57:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-25 00:57:21,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 00:57:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:21,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:57:21,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:21,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:21,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:21,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:57:21,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:21,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193835679] [2020-09-25 00:57:21,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:21,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 00:57:21,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329644908] [2020-09-25 00:57:21,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 00:57:21,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:21,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 00:57:21,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:57:21,756 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-09-25 00:57:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:21,893 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-09-25 00:57:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 00:57:21,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-25 00:57:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:21,907 INFO L225 Difference]: With dead ends: 89 [2020-09-25 00:57:21,907 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 00:57:21,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:57:21,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 00:57:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 00:57:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 00:57:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-09-25 00:57:21,962 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 26 [2020-09-25 00:57:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:21,963 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-09-25 00:57:21,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 00:57:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-09-25 00:57:21,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 00:57:21,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:21,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:21,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:57:21,965 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:21,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:21,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1836407039, now seen corresponding path program 1 times [2020-09-25 00:57:21,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:21,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751250687] [2020-09-25 00:57:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:22,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:22,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 00:57:22,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:22,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 00:57:22,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:57:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:57:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 00:57:22,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:22,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:22,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:22,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:22,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:57:22,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:22,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:22,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751250687] [2020-09-25 00:57:22,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:22,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:57:22,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392237919] [2020-09-25 00:57:22,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:57:22,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:22,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:57:22,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:57:22,236 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-09-25 00:57:22,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:22,572 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-09-25 00:57:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:57:22,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-25 00:57:22,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:22,577 INFO L225 Difference]: With dead ends: 122 [2020-09-25 00:57:22,578 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 00:57:22,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:57:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 00:57:22,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2020-09-25 00:57:22,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 00:57:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-25 00:57:22,601 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 30 [2020-09-25 00:57:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:22,601 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-25 00:57:22,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:57:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-25 00:57:22,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 00:57:22,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:22,606 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] [2020-09-25 00:57:22,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:57:22,607 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:22,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1477911671, now seen corresponding path program 1 times [2020-09-25 00:57:22,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:22,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56382150] [2020-09-25 00:57:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:22,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:22,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:22,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 00:57:22,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:22,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 00:57:22,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:57:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:57:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:57:22,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:22,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:22,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:22,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:22,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:57:22,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:22,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:22,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:22,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:22,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:22,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56382150] [2020-09-25 00:57:22,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:22,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:57:22,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565757131] [2020-09-25 00:57:22,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:57:22,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:22,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:57:22,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:57:22,854 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-09-25 00:57:23,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:23,107 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-09-25 00:57:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:57:23,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 00:57:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:23,112 INFO L225 Difference]: With dead ends: 117 [2020-09-25 00:57:23,112 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 00:57:23,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:57:23,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 00:57:23,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2020-09-25 00:57:23,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 00:57:23,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-09-25 00:57:23,132 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 36 [2020-09-25 00:57:23,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:23,132 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-09-25 00:57:23,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:57:23,133 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-09-25 00:57:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 00:57:23,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:23,135 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] [2020-09-25 00:57:23,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:57:23,135 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:23,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:23,136 INFO L82 PathProgramCache]: Analyzing trace with hash -380981001, now seen corresponding path program 1 times [2020-09-25 00:57:23,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:23,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332738192] [2020-09-25 00:57:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:23,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:23,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 00:57:23,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 00:57:23,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:57:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:57:23,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:57:23,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:23,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:23,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:23,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:23,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:57:23,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:23,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:23,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332738192] [2020-09-25 00:57:23,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:23,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:57:23,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330015194] [2020-09-25 00:57:23,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:57:23,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:23,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:57:23,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:57:23,391 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 7 states. [2020-09-25 00:57:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:23,596 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-09-25 00:57:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:57:23,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 00:57:23,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:23,598 INFO L225 Difference]: With dead ends: 100 [2020-09-25 00:57:23,599 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 00:57:23,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:57:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 00:57:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 55. [2020-09-25 00:57:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 00:57:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-25 00:57:23,612 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2020-09-25 00:57:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:23,613 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-25 00:57:23,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:57:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-25 00:57:23,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 00:57:23,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:23,617 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:23,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:57:23,617 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:23,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:23,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1659276919, now seen corresponding path program 1 times [2020-09-25 00:57:23,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:23,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479496591] [2020-09-25 00:57:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:57:23,652 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:57:23,653 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:57:23,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:57:23,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:57:23 BoogieIcfgContainer [2020-09-25 00:57:23,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:57:23,689 INFO L168 Benchmark]: Toolchain (without parser) took 4209.64 ms. Allocated memory was 142.1 MB in the beginning and 242.7 MB in the end (delta: 100.7 MB). Free memory was 104.4 MB in the beginning and 123.1 MB in the end (delta: -18.7 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:23,690 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:57:23,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.63 ms. Allocated memory was 142.1 MB in the beginning and 207.1 MB in the end (delta: 65.0 MB). Free memory was 103.8 MB in the beginning and 173.7 MB in the end (delta: -69.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:23,693 INFO L168 Benchmark]: Boogie Preprocessor took 82.15 ms. Allocated memory is still 207.1 MB. Free memory was 173.7 MB in the beginning and 171.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:23,699 INFO L168 Benchmark]: RCFGBuilder took 689.79 ms. Allocated memory is still 207.1 MB. Free memory was 171.2 MB in the beginning and 124.7 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:23,700 INFO L168 Benchmark]: TraceAbstraction took 2758.98 ms. Allocated memory was 207.1 MB in the beginning and 242.7 MB in the end (delta: 35.7 MB). Free memory was 124.0 MB in the beginning and 123.1 MB in the end (delta: 952.2 kB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:23,711 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 669.63 ms. Allocated memory was 142.1 MB in the beginning and 207.1 MB in the end (delta: 65.0 MB). Free memory was 103.8 MB in the beginning and 173.7 MB in the end (delta: -69.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.15 ms. Allocated memory is still 207.1 MB. Free memory was 173.7 MB in the beginning and 171.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 689.79 ms. Allocated memory is still 207.1 MB. Free memory was 171.2 MB in the beginning and 124.7 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2758.98 ms. Allocated memory was 207.1 MB in the beginning and 242.7 MB in the end (delta: 35.7 MB). Free memory was 124.0 MB in the beginning and 123.1 MB in the end (delta: 952.2 kB). Peak memory consumption was 36.6 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, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 210 SDtfs, 217 SDslu, 451 SDs, 0 SdLazy, 504 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=2, 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, 121 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 9910 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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...