/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum60.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:15:21,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:15:21,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:15:21,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:15:21,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:15:21,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:15:21,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:15:21,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:15:21,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:15:21,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:15:21,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:15:21,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:15:21,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:15:21,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:15:21,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:15:21,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:15:21,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:15:21,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:15:21,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:15:21,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:15:21,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:15:21,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:15:21,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:15:21,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:15:21,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:15:21,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:15:21,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:15:21,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:15:21,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:15:21,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-15 02:15:21,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:15:21,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:15:21,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:15:21,062 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 [2020-10-15 02:15:21,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:15:21,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:15:21,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:15:21,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:15:21,100 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:15:21,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:15:21,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:15:21,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:15:21,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:15:21,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:15:21,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:15:21,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:15:21,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:15:21,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:15:21,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:15:21,103 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:15:21,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:15:21,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:15:21,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:15:21,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:15:21,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:15:21,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:15:21,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:15:21,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:15:21,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:15:21,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:15:21,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:15:21,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:15:21,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:15:21,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:15:21,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:15:21,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:15:21,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:15:21,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:15:21,469 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:15:21,469 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum60.i [2020-10-15 02:15:21,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9f3bdf0f/ccb0d434a8ec470699c934be278befae/FLAG6e356db88 [2020-10-15 02:15:22,028 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:15:22,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/rangesum60.i [2020-10-15 02:15:22,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9f3bdf0f/ccb0d434a8ec470699c934be278befae/FLAG6e356db88 [2020-10-15 02:15:22,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9f3bdf0f/ccb0d434a8ec470699c934be278befae [2020-10-15 02:15:22,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:15:22,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:15:22,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:15:22,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:15:22,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:15:22,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:15:22" (1/1) ... [2020-10-15 02:15:22,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac45341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22, skipping insertion in model container [2020-10-15 02:15:22,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:15:22" (1/1) ... [2020-10-15 02:15:22,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:15:22,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:15:22,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:15:22,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:15:22,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:15:22,676 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:15:22,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22 WrapperNode [2020-10-15 02:15:22,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:15:22,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:15:22,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:15:22,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:15:22,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22" (1/1) ... [2020-10-15 02:15:22,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22" (1/1) ... [2020-10-15 02:15:22,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22" (1/1) ... [2020-10-15 02:15:22,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22" (1/1) ... [2020-10-15 02:15:22,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22" (1/1) ... [2020-10-15 02:15:22,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22" (1/1) ... [2020-10-15 02:15:22,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22" (1/1) ... [2020-10-15 02:15:22,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:15:22,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:15:22,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:15:22,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:15:22,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22" (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 [2020-10-15 02:15:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:15:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:15:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2020-10-15 02:15:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2020-10-15 02:15:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:15:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:15:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:15:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2020-10-15 02:15:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:15:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2020-10-15 02:15:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:15:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:15:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:15:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:15:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:15:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:15:23,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:15:23,202 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 02:15:23,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:15:23 BoogieIcfgContainer [2020-10-15 02:15:23,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:15:23,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:15:23,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:15:23,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:15:23,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:15:22" (1/3) ... [2020-10-15 02:15:23,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e51bcf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:15:23, skipping insertion in model container [2020-10-15 02:15:23,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:15:22" (2/3) ... [2020-10-15 02:15:23,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e51bcf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:15:23, skipping insertion in model container [2020-10-15 02:15:23,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:15:23" (3/3) ... [2020-10-15 02:15:23,216 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum60.i [2020-10-15 02:15:23,228 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:15:23,239 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:15:23,260 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:15:23,309 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:15:23,309 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:15:23,322 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:15:23,322 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:15:23,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:15:23,323 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:15:23,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:15:23,323 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:15:23,346 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-15 02:15:23,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 02:15:23,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:23,355 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-15 02:15:23,356 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:23,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:23,362 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2020-10-15 02:15:23,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:23,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927634558] [2020-10-15 02:15:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:23,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:23,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927634558] [2020-10-15 02:15:23,563 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-15 02:15:23,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:15:23,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-15 02:15:23,564 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-15 02:15:23,565 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 02:15:23,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:15:23,593 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-15 02:15:23,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:15:23 BoogieIcfgContainer [2020-10-15 02:15:23,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 02:15:23,597 INFO L168 Benchmark]: Toolchain (without parser) took 1212.45 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 103.8 MB in the beginning and 146.8 MB in the end (delta: -43.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-10-15 02:15:23,598 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-15 02:15:23,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.59 ms. Allocated memory is still 147.3 MB. Free memory was 103.4 MB in the beginning and 92.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-15 02:15:23,606 INFO L168 Benchmark]: Boogie Preprocessor took 160.41 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 92.9 MB in the beginning and 180.3 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-15 02:15:23,607 INFO L168 Benchmark]: RCFGBuilder took 368.17 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 162.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-10-15 02:15:23,608 INFO L168 Benchmark]: TraceAbstraction took 385.41 ms. Allocated memory is still 202.9 MB. Free memory was 161.3 MB in the beginning and 146.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-10-15 02:15:23,621 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.59 ms. Allocated memory is still 147.3 MB. Free memory was 103.4 MB in the beginning and 92.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 160.41 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 92.9 MB in the beginning and 180.3 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.17 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 162.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 385.41 ms. Allocated memory is still 202.9 MB. Free memory was 161.3 MB in the beginning and 146.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: 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: [L31] int x[60]; [L32] CALL init_nondet(x) [L5] int i; [L6] i = 0 [L6] COND FALSE !(i < 60) [L32] RET init_nondet(x) [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; [L38] CALL, EXPR rangesum(x) [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L38] RET, EXPR rangesum(x) [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp [L41] CALL, EXPR rangesum(x) [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L41] RET, EXPR rangesum(x) [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; [L43] COND FALSE !(i<60 -1) [L46] x[60 -1] = temp [L47] CALL, EXPR rangesum(x) [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L47] RET, EXPR rangesum(x) [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 3, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...