/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/array-fpi/s52if.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:42:46,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:42:46,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:42:46,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:42:46,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:42:46,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:42:46,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:42:46,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:42:46,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:42:46,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:42:46,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:42:46,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:42:46,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:42:46,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:42:46,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:42:46,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:42:46,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:42:46,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:42:46,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:42:46,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:42:47,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:42:47,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:42:47,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:42:47,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:42:47,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:42:47,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:42:47,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:42:47,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:42:47,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:42:47,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:42:47,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:42:47,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:42:47,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:42:47,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:42:47,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:42:47,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:42:47,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:42:47,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:42:47,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:42:47,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:42:47,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:42:47,032 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 [2020-10-27 14:42:47,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:42:47,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:42:47,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:42:47,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:42:47,063 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:42:47,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:42:47,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:42:47,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:42:47,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:42:47,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:42:47,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:42:47,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:42:47,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:42:47,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:42:47,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:42:47,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:42:47,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:42:47,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:42:47,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:42:47,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:42:47,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:42:47,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:42:47,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:42:47,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:42:47,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:42:47,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:42:47,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:42:47,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:42:47,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:42:47,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:42:47,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:42:47,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:42:47,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:42:47,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:42:47,565 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:42:47,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s52if.c [2020-10-27 14:42:47,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35af41c35/f0d61d4c2fd1430a86c4c8e4400aaaee/FLAGf6a46d19b [2020-10-27 14:42:48,328 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:42:48,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s52if.c [2020-10-27 14:42:48,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35af41c35/f0d61d4c2fd1430a86c4c8e4400aaaee/FLAGf6a46d19b [2020-10-27 14:42:48,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35af41c35/f0d61d4c2fd1430a86c4c8e4400aaaee [2020-10-27 14:42:48,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:42:48,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:42:48,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:42:48,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:42:48,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:42:48,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:42:48" (1/1) ... [2020-10-27 14:42:48,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b835bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:48, skipping insertion in model container [2020-10-27 14:42:48,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:42:48" (1/1) ... [2020-10-27 14:42:48,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:42:48,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:42:48,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:42:48,917 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:42:48,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:42:49,002 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:42:49,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:49 WrapperNode [2020-10-27 14:42:49,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:42:49,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:42:49,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:42:49,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:42:49,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:49" (1/1) ... [2020-10-27 14:42:49,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:49" (1/1) ... [2020-10-27 14:42:49,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:49" (1/1) ... [2020-10-27 14:42:49,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:49" (1/1) ... [2020-10-27 14:42:49,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:49" (1/1) ... [2020-10-27 14:42:49,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:49" (1/1) ... [2020-10-27 14:42:49,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:49" (1/1) ... [2020-10-27 14:42:49,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:42:49,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:42:49,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:42:49,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:42:49,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:49" (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 [2020-10-27 14:42:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:42:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:42:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:42:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:42:49,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:42:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:42:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:42:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:42:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:42:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:42:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:42:49,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:42:49,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:42:49,222 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:42:49,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:42:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:42:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:42:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:42:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:42:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:42:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:42:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:42:49,829 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:42:49,830 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:42:49,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:42:49 BoogieIcfgContainer [2020-10-27 14:42:49,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:42:49,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:42:49,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:42:49,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:42:49,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:42:48" (1/3) ... [2020-10-27 14:42:49,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744d13e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:42:49, skipping insertion in model container [2020-10-27 14:42:49,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:49" (2/3) ... [2020-10-27 14:42:49,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744d13e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:42:49, skipping insertion in model container [2020-10-27 14:42:49,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:42:49" (3/3) ... [2020-10-27 14:42:49,842 INFO L111 eAbstractionObserver]: Analyzing ICFG s52if.c [2020-10-27 14:42:49,854 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:42:49,859 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:42:49,871 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:42:49,900 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:42:49,901 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:42:49,901 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:42:49,901 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:42:49,901 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:42:49,901 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:42:49,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:42:49,902 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:42:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-27 14:42:49,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:42:49,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:42:49,948 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] [2020-10-27 14:42:49,949 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:42:49,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:42:49,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1702539242, now seen corresponding path program 1 times [2020-10-27 14:42:49,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:42:49,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093923816] [2020-10-27 14:42:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:42:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:42:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:50,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:50,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:42:50,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:42:50,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:42:50,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-27 14:42:50,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:42:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:42:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:42:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:42:50,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 14:42:50,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:42:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:42:50,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:50,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:42:50,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:42:50,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:42:50,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:42:50,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:42:50,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:42:50,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:42:50,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:42:50,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:42:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:42:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:42:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:50,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:42:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:42:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:42:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:42:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:42:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:42:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:42:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:42:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:42:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:42:50,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093923816] [2020-10-27 14:42:50,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:42:50,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:42:50,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574896403] [2020-10-27 14:42:50,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:42:50,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:42:50,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:42:50,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:42:50,950 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-10-27 14:42:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:42:51,091 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-27 14:42:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:42:51,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-27 14:42:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:42:51,102 INFO L225 Difference]: With dead ends: 67 [2020-10-27 14:42:51,102 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 14:42:51,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:42:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 14:42:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-27 14:42:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 14:42:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-27 14:42:51,158 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2020-10-27 14:42:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:42:51,158 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-27 14:42:51,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:42:51,159 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-27 14:42:51,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:42:51,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:42:51,160 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] [2020-10-27 14:42:51,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:42:51,161 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:42:51,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:42:51,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1952199574, now seen corresponding path program 1 times [2020-10-27 14:42:51,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:42:51,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433507831] [2020-10-27 14:42:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:42:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:42:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:51,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:51,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:42:51,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:42:51,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:42:51,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-10-27 14:42:51,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:42:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:42:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:42:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:42:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:42:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:42:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:42:52,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:52,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:42:52,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:42:52,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:42:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:42:52,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:42:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:42:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:42:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:42:52,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:42:52,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:42:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:42:52,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:52,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:42:52,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:42:52,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:42:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:42:52,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:42:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:42:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:42:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:42:52,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:42:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:42:52,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433507831] [2020-10-27 14:42:52,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:42:52,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:42:52,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607729150] [2020-10-27 14:42:52,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:42:52,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:42:52,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:42:52,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:42:52,113 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-27 14:42:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:42:52,292 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-27 14:42:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:42:52,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-27 14:42:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:42:52,295 INFO L225 Difference]: With dead ends: 48 [2020-10-27 14:42:52,295 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 14:42:52,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:42:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 14:42:52,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-27 14:42:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:42:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:42:52,306 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-27 14:42:52,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:42:52,306 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:42:52,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:42:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:42:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:42:52,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:42:52,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:42:52,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:42:52,308 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:42:52,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:42:52,309 INFO L82 PathProgramCache]: Analyzing trace with hash -856996485, now seen corresponding path program 1 times [2020-10-27 14:42:52,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:42:52,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297496023] [2020-10-27 14:42:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:42:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:42:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:52,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:54,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:57,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:42:57,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:42:57,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:42:57,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:42:57,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:42:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:42:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 14:42:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:42:57,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:42:57,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:42:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:42:57,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:57,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:42:57,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:42:57,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:42:57,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:42:57,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:42:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:42:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:42:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:42:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:42:57,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:42:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:42:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:42:57,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:42:57,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:42:57,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:42:57,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:42:57,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:42:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:42:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:42:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:42:57,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:42:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:42:57,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297496023] [2020-10-27 14:42:57,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:42:57,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:42:57,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461512707] [2020-10-27 14:42:57,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:42:57,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:42:57,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:42:57,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:42:57,779 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 13 states. [2020-10-27 14:42:58,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:42:58,680 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-27 14:42:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:42:58,683 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-27 14:42:58,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:42:58,690 INFO L225 Difference]: With dead ends: 77 [2020-10-27 14:42:58,690 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 14:42:58,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:42:58,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 14:42:58,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 49. [2020-10-27 14:42:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 14:42:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2020-10-27 14:42:58,720 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 32 [2020-10-27 14:42:58,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:42:58,725 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2020-10-27 14:42:58,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:42:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2020-10-27 14:42:58,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:42:58,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:42:58,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:42:58,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:42:58,728 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:42:58,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:42:58,728 INFO L82 PathProgramCache]: Analyzing trace with hash -176938115, now seen corresponding path program 1 times [2020-10-27 14:42:58,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:42:58,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492114793] [2020-10-27 14:42:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:42:58,756 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-27 14:42:58,757 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-27 14:42:58,757 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:42:58,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:42:58,784 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 14:42:58,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:42:58 BoogieIcfgContainer [2020-10-27 14:42:58,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:42:58,790 INFO L168 Benchmark]: Toolchain (without parser) took 10120.01 ms. Allocated memory was 155.2 MB in the beginning and 273.7 MB in the end (delta: 118.5 MB). Free memory was 131.4 MB in the beginning and 111.3 MB in the end (delta: 20.1 MB). Peak memory consumption was 139.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:42:58,791 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 155.2 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:42:58,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.52 ms. Allocated memory is still 155.2 MB. Free memory was 130.6 MB in the beginning and 120.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:42:58,794 INFO L168 Benchmark]: Boogie Preprocessor took 84.97 ms. Allocated memory is still 155.2 MB. Free memory was 120.4 MB in the beginning and 118.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:42:58,796 INFO L168 Benchmark]: RCFGBuilder took 737.51 ms. Allocated memory is still 155.2 MB. Free memory was 118.6 MB in the beginning and 101.0 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-27 14:42:58,798 INFO L168 Benchmark]: TraceAbstraction took 8951.97 ms. Allocated memory was 155.2 MB in the beginning and 273.7 MB in the end (delta: 118.5 MB). Free memory was 100.8 MB in the beginning and 111.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 108.7 MB. Max. memory is 8.0 GB. [2020-10-27 14:42:58,807 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 155.2 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.52 ms. Allocated memory is still 155.2 MB. Free memory was 130.6 MB in the beginning and 120.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.97 ms. Allocated memory is still 155.2 MB. Free memory was 120.4 MB in the beginning and 118.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 737.51 ms. Allocated memory is still 155.2 MB. Free memory was 118.6 MB in the beginning and 101.0 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8951.97 ms. Allocated memory was 155.2 MB in the beginning and 273.7 MB in the end (delta: 118.5 MB). Free memory was 100.8 MB in the beginning and 111.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 108.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i