/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-lopstr16/motivex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:49:30,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:49:30,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:49:30,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:49:30,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:49:30,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:49:30,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:49:30,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:49:30,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:49:30,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:49:30,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:49:30,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:49:30,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:49:30,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:49:30,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:49:30,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:49:30,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:49:30,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:49:30,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:49:30,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:49:30,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:49:30,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:49:30,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:49:30,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:49:30,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:49:30,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:49:30,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:49:30,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:49:30,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:49:30,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:49:30,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:49:30,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:49:30,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:49:30,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:49:30,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:49:30,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:49:30,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:49:30,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:49:30,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:49:30,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:49:30,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:49:30,790 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 14:49:30,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:49:30,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:49:30,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:49:30,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:49:30,871 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:49:30,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:49:30,873 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:49:30,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:49:30,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:49:30,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:49:30,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:49:30,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:49:30,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:49:30,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:49:30,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:49:30,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:49:30,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:49:30,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:49:30,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:49:30,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:49:30,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:49:30,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:49:30,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:49:30,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:49:30,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:49:30,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:49:30,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:49:30,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:49:30,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:49:30,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:49:31,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:49:31,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:49:31,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:49:31,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:49:31,293 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:49:31,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/motivex.i [2020-10-27 14:49:31,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13550aa40/2a4527aad8e24689943912602f29a900/FLAGe42b913fa [2020-10-27 14:49:32,090 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:49:32,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/motivex.i [2020-10-27 14:49:32,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13550aa40/2a4527aad8e24689943912602f29a900/FLAGe42b913fa [2020-10-27 14:49:32,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13550aa40/2a4527aad8e24689943912602f29a900 [2020-10-27 14:49:32,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:49:32,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:49:32,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:49:32,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:49:32,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:49:32,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:49:32" (1/1) ... [2020-10-27 14:49:32,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc58964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:32, skipping insertion in model container [2020-10-27 14:49:32,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:49:32" (1/1) ... [2020-10-27 14:49:32,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:49:32,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:49:32,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:49:33,027 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:49:33,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:49:33,105 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:49:33,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:33 WrapperNode [2020-10-27 14:49:33,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:49:33,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:49:33,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:49:33,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:49:33,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:33" (1/1) ... [2020-10-27 14:49:33,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:33" (1/1) ... [2020-10-27 14:49:33,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:33" (1/1) ... [2020-10-27 14:49:33,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:33" (1/1) ... [2020-10-27 14:49:33,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:33" (1/1) ... [2020-10-27 14:49:33,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:33" (1/1) ... [2020-10-27 14:49:33,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:33" (1/1) ... [2020-10-27 14:49:33,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:49:33,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:49:33,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:49:33,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:49:33,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:33" (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 14:49:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:49:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:49:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:49:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:49:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:49:33,304 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:49:33,304 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:49:33,304 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:49:33,304 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:49:33,305 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-27 14:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:49:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:49:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:49:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:49:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:49:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:49:33,806 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:49:33,807 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:49:33,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:49:33 BoogieIcfgContainer [2020-10-27 14:49:33,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:49:33,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:49:33,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:49:33,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:49:33,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:49:32" (1/3) ... [2020-10-27 14:49:33,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16909e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:49:33, skipping insertion in model container [2020-10-27 14:49:33,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:33" (2/3) ... [2020-10-27 14:49:33,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16909e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:49:33, skipping insertion in model container [2020-10-27 14:49:33,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:49:33" (3/3) ... [2020-10-27 14:49:33,818 INFO L111 eAbstractionObserver]: Analyzing ICFG motivex.i [2020-10-27 14:49:33,830 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:49:33,836 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:49:33,850 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:49:33,878 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:49:33,878 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:49:33,879 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:49:33,879 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:49:33,879 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:49:33,879 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:49:33,879 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:49:33,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:49:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-27 14:49:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 14:49:33,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:33,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:33,907 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:33,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1981251521, now seen corresponding path program 1 times [2020-10-27 14:49:33,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:33,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130245982] [2020-10-27 14:49:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:34,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:34,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:34,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:49:34,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:49:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-27 14:49:34,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:49:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:49:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:49:34,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:49:34,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:34,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:35,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:35,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:35,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:35,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:49:35,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:35,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:35,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:35,016 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 14:49:35,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130245982] [2020-10-27 14:49:35,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:49:35,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:49:35,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450262074] [2020-10-27 14:49:35,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:49:35,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:35,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:49:35,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:49:35,045 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2020-10-27 14:49:35,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:35,495 INFO L93 Difference]: Finished difference Result 79 states and 111 transitions. [2020-10-27 14:49:35,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:49:35,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-27 14:49:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:35,508 INFO L225 Difference]: With dead ends: 79 [2020-10-27 14:49:35,508 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 14:49:35,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:49:35,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 14:49:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2020-10-27 14:49:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:49:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 14:49:35,564 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 18 [2020-10-27 14:49:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:35,564 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 14:49:35,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:49:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 14:49:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 14:49:35,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:35,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:35,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:49:35,566 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:35,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:35,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1180908082, now seen corresponding path program 1 times [2020-10-27 14:49:35,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:35,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454858277] [2020-10-27 14:49:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:35,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454858277] [2020-10-27 14:49:35,598 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-27 14:49:35,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:49:35,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-27 14:49:35,598 ERROR L205 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-27 14:49:35,599 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:49:35,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:49:35,619 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 14:49:35,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:49:35 BoogieIcfgContainer [2020-10-27 14:49:35,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:49:35,623 INFO L168 Benchmark]: Toolchain (without parser) took 3194.68 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 125.7 MB in the beginning and 104.9 MB in the end (delta: 20.8 MB). Peak memory consumption was 56.9 MB. Max. memory is 8.0 GB. [2020-10-27 14:49:35,624 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:49:35,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.85 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 55.9 MB in the end (delta: 69.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB. [2020-10-27 14:49:35,626 INFO L168 Benchmark]: Boogie Preprocessor took 87.08 ms. Allocated memory is still 151.0 MB. Free memory was 55.9 MB in the beginning and 54.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:49:35,627 INFO L168 Benchmark]: RCFGBuilder took 611.71 ms. Allocated memory is still 151.0 MB. Free memory was 54.4 MB in the beginning and 121.0 MB in the end (delta: -66.6 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2020-10-27 14:49:35,628 INFO L168 Benchmark]: TraceAbstraction took 1809.56 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 120.5 MB in the beginning and 104.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 51.2 MB. Max. memory is 8.0 GB. [2020-10-27 14:49:35,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 673.85 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 55.9 MB in the end (delta: 69.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 87.08 ms. Allocated memory is still 151.0 MB. Free memory was 55.9 MB in the beginning and 54.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 611.71 ms. Allocated memory is still 151.0 MB. Free memory was 54.4 MB in the beginning and 121.0 MB in the end (delta: -66.6 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1809.56 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 120.5 MB in the beginning and 104.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 51.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: 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: [L15-L18] struct S { unsigned short p; unsigned short q; } a[10000]; [L21] unsigned char k; [L22] int i; [L23] i = 0 [L23] COND FALSE !(i < 1000000) [L28] i = 0 [L28] COND FALSE !(i < 1000000) [L37] i = 0 [L37] COND TRUE i < 1000000 [L39] EXPR a[i].p [L39] EXPR a[i].q [L39] EXPR a[i].p == a[i].q || a[i].q == a[i].p * a[i].p [L39] EXPR a[i].q [L39] EXPR a[i].p [L39] EXPR a[i].p [L39] EXPR a[i].p == a[i].q || a[i].q == a[i].p * a[i].p [L39] CALL __VERIFIER_assert(a[i].p == a[i].q || a[i].q == a[i].p * a[i].p) [L13] COND TRUE !(cond) [L13] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "motivex.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 32 SDslu, 35 SDs, 0 SdLazy, 112 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 952 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...