/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:54:12,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:54:12,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:54:12,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:54:12,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:54:12,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:54:12,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:54:12,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:54:12,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:54:12,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:54:12,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:54:12,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:54:12,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:54:12,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:54:12,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:54:12,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:54:12,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:54:12,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:54:13,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:54:13,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:54:13,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:54:13,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:54:13,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:54:13,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:54:13,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:54:13,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:54:13,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:54:13,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:54:13,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:54:13,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:54:13,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:54:13,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:54:13,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:54:13,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:54:13,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:54:13,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:54:13,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:54:13,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:54:13,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:54:13,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:54:13,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:54:13,057 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 [2020-10-29 03:54:13,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:54:13,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:54:13,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:54:13,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:54:13,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:54:13,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:54:13,115 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:54:13,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:54:13,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:54:13,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:54:13,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:54:13,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:54:13,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:54:13,117 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:54:13,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:54:13,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:54:13,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:54:13,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:54:13,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:54:13,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:54:13,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:54:13,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:54:13,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:54:13,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:54:13,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:54:13,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:54:13,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:54:13,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:54:13,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:54:13,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:54:13,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:54:13,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:54:13,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:54:13,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:54:13,566 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:54:13,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2020-10-29 03:54:13,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8e9e0672/11f30ea19d6c421b875c398315adbfe8/FLAG608ba56a0 [2020-10-29 03:54:14,270 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:54:14,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modsf.c [2020-10-29 03:54:14,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8e9e0672/11f30ea19d6c421b875c398315adbfe8/FLAG608ba56a0 [2020-10-29 03:54:14,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8e9e0672/11f30ea19d6c421b875c398315adbfe8 [2020-10-29 03:54:14,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:54:14,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:54:14,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:54:14,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:54:14,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:54:14,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:54:14" (1/1) ... [2020-10-29 03:54:14,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8f2736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14, skipping insertion in model container [2020-10-29 03:54:14,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:54:14" (1/1) ... [2020-10-29 03:54:14,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:54:14,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:54:14,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:54:14,877 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:54:14,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:54:14,920 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:54:14,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14 WrapperNode [2020-10-29 03:54:14,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:54:14,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:54:14,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:54:14,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:54:14,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14" (1/1) ... [2020-10-29 03:54:14,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14" (1/1) ... [2020-10-29 03:54:14,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14" (1/1) ... [2020-10-29 03:54:14,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14" (1/1) ... [2020-10-29 03:54:14,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14" (1/1) ... [2020-10-29 03:54:15,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14" (1/1) ... [2020-10-29 03:54:15,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14" (1/1) ... [2020-10-29 03:54:15,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:54:15,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:54:15,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:54:15,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:54:15,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14" (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 [2020-10-29 03:54:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:54:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:54:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:54:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:54:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:54:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:54:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:54:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:54:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:54:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:54:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:54:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:54:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:54:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:54:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:54:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:54:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:54:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:54:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:54:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:54:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:54:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:54:15,594 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:54:15,595 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-29 03:54:15,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:54:15 BoogieIcfgContainer [2020-10-29 03:54:15,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:54:15,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:54:15,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:54:15,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:54:15,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:54:14" (1/3) ... [2020-10-29 03:54:15,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5650dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:54:15, skipping insertion in model container [2020-10-29 03:54:15,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:14" (2/3) ... [2020-10-29 03:54:15,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5650dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:54:15, skipping insertion in model container [2020-10-29 03:54:15,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:54:15" (3/3) ... [2020-10-29 03:54:15,606 INFO L111 eAbstractionObserver]: Analyzing ICFG modsf.c [2020-10-29 03:54:15,619 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:54:15,624 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:54:15,639 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:54:15,667 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:54:15,668 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:54:15,668 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:54:15,668 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:54:15,668 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:54:15,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:54:15,669 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:54:15,669 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:54:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-29 03:54:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:54:15,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:15,697 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] [2020-10-29 03:54:15,698 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:15,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:15,705 INFO L82 PathProgramCache]: Analyzing trace with hash -386611775, now seen corresponding path program 1 times [2020-10-29 03:54:15,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:15,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295526611] [2020-10-29 03:54:15,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:17,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:19,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:19,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:54:19,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:54:19,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3581 [2020-10-29 03:54:19,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:19,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:54:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:54:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:54:19,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:54:19,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:19,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:19,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:19,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:19,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:54:19,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:19,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:19,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:19,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:19,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:19,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:19,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:19,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:19,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:54:19,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:19,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:19,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:19,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:19,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295526611] [2020-10-29 03:54:19,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:54:19,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:54:19,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826141822] [2020-10-29 03:54:19,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:54:19,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:19,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:54:19,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:54:19,679 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-10-29 03:54:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:20,047 INFO L93 Difference]: Finished difference Result 84 states and 117 transitions. [2020-10-29 03:54:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:54:20,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-29 03:54:20,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:20,061 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:54:20,061 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 03:54:20,067 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 [2020-10-29 03:54:20,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 03:54:20,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-29 03:54:20,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:54:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-29 03:54:20,143 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 27 [2020-10-29 03:54:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:20,143 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-29 03:54:20,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:54:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-29 03:54:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:54:20,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:20,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:20,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:54:20,151 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:20,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1148507143, now seen corresponding path program 1 times [2020-10-29 03:54:20,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:20,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796740010] [2020-10-29 03:54:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:20,188 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-29 03:54:20,188 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-29 03:54:20,189 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 03:54:20,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:54:20,223 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-29 03:54:20,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 03:54:20 BoogieIcfgContainer [2020-10-29 03:54:20,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 03:54:20,229 INFO L168 Benchmark]: Toolchain (without parser) took 5581.08 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 136.9 MB in the beginning and 142.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-29 03:54:20,230 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:54:20,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.95 ms. Allocated memory is still 161.5 MB. Free memory was 136.3 MB in the beginning and 126.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 03:54:20,233 INFO L168 Benchmark]: Boogie Preprocessor took 85.53 ms. Allocated memory is still 161.5 MB. Free memory was 126.3 MB in the beginning and 124.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 03:54:20,234 INFO L168 Benchmark]: RCFGBuilder took 588.06 ms. Allocated memory is still 161.5 MB. Free memory was 124.5 MB in the beginning and 140.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2020-10-29 03:54:20,236 INFO L168 Benchmark]: TraceAbstraction took 4625.44 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 140.0 MB in the beginning and 142.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 29.6 MB. Max. memory is 8.0 GB. [2020-10-29 03:54:20,245 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.95 ms. Allocated memory is still 161.5 MB. Free memory was 136.3 MB in the beginning and 126.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.53 ms. Allocated memory is still 161.5 MB. Free memory was 126.3 MB in the beginning and 124.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 588.06 ms. Allocated memory is still 161.5 MB. Free memory was 124.5 MB in the beginning and 140.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4625.44 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 140.0 MB in the beginning and 142.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 29.6 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] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i