/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:38:22,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:38:22,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:38:22,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:38:22,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:38:22,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:38:22,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:38:22,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:38:22,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:38:22,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:38:22,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:38:22,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:38:22,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:38:22,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:38:22,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:38:22,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:38:22,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:38:22,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:38:22,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:38:22,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:38:22,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:38:22,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:38:22,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:38:22,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:38:22,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:38:22,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:38:22,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:38:22,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:38:22,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:38:22,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 23:38:22,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:38:22,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:38:22,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:38:22,817 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 [2020-08-18 23:38:22,863 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:38:22,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:38:22,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:38:22,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:38:22,865 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:38:22,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:38:22,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:38:22,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:38:22,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:38:22,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:38:22,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:38:22,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:38:22,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:38:22,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:38:22,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:38:22,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:38:22,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:38:22,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:38:22,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:38:22,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:38:22,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:38:22,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:38:22,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:38:22,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:38:22,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:38:22,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:38:22,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:38:22,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:38:22,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:38:22,872 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:38:23,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:38:23,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:38:23,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:38:23,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:38:23,213 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:38:23,214 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum.i [2020-08-18 23:38:23,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bde13b71c/76c1ea4068bd42d5a6a02273ec8bebfd/FLAG69770d8d7 [2020-08-18 23:38:23,780 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:38:23,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/rangesum.i [2020-08-18 23:38:23,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bde13b71c/76c1ea4068bd42d5a6a02273ec8bebfd/FLAG69770d8d7 [2020-08-18 23:38:24,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bde13b71c/76c1ea4068bd42d5a6a02273ec8bebfd [2020-08-18 23:38:24,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:38:24,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:38:24,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:38:24,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:38:24,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:38:24,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:38:24" (1/1) ... [2020-08-18 23:38:24,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526e8c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24, skipping insertion in model container [2020-08-18 23:38:24,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:38:24" (1/1) ... [2020-08-18 23:38:24,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:38:24,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:38:24,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:38:24,394 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:38:24,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:38:24,444 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:38:24,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24 WrapperNode [2020-08-18 23:38:24,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:38:24,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:38:24,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:38:24,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:38:24,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24" (1/1) ... [2020-08-18 23:38:24,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24" (1/1) ... [2020-08-18 23:38:24,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24" (1/1) ... [2020-08-18 23:38:24,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24" (1/1) ... [2020-08-18 23:38:24,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24" (1/1) ... [2020-08-18 23:38:24,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24" (1/1) ... [2020-08-18 23:38:24,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24" (1/1) ... [2020-08-18 23:38:24,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:38:24,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:38:24,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:38:24,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:38:24,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24" (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 [2020-08-18 23:38:24,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:38:24,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:38:24,630 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2020-08-18 23:38:24,630 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2020-08-18 23:38:24,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:38:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:38:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:38:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2020-08-18 23:38:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:38:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2020-08-18 23:38:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:38:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:38:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:38:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:38:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:38:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:38:24,932 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:38:24,933 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 23:38:24,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:38:24 BoogieIcfgContainer [2020-08-18 23:38:24,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:38:24,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:38:24,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:38:24,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:38:24,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:38:24" (1/3) ... [2020-08-18 23:38:24,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36362141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:38:24, skipping insertion in model container [2020-08-18 23:38:24,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:24" (2/3) ... [2020-08-18 23:38:24,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36362141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:38:24, skipping insertion in model container [2020-08-18 23:38:24,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:38:24" (3/3) ... [2020-08-18 23:38:24,948 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum.i [2020-08-18 23:38:24,960 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:38:24,968 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:38:24,993 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:38:25,043 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:38:25,043 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:38:25,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:38:25,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:38:25,044 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:38:25,044 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:38:25,044 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:38:25,044 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:38:25,063 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-08-18 23:38:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 23:38:25,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:38:25,072 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, 1] [2020-08-18 23:38:25,072 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:38:25,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:38:25,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1377249276, now seen corresponding path program 1 times [2020-08-18 23:38:25,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:38:25,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735377590] [2020-08-18 23:38:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:38:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:25,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:38:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:38:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:38:25,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735377590] [2020-08-18 23:38:25,381 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-08-18 23:38:25,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:38:25,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-08-18 23:38:25,382 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-08-18 23:38:25,383 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:38:25,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:38:25,419 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 23:38:25,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:38:25 BoogieIcfgContainer [2020-08-18 23:38:25,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:38:25,423 INFO L168 Benchmark]: Toolchain (without parser) took 1255.18 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.9 MB in the beginning and 142.3 MB in the end (delta: -41.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:25,424 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 23:38:25,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.22 ms. Allocated memory is still 139.5 MB. Free memory was 100.7 MB in the beginning and 90.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:25,426 INFO L168 Benchmark]: Boogie Preprocessor took 123.27 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 90.1 MB in the beginning and 179.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:25,427 INFO L168 Benchmark]: RCFGBuilder took 366.80 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:25,428 INFO L168 Benchmark]: TraceAbstraction took 480.48 ms. Allocated memory is still 201.9 MB. Free memory was 159.7 MB in the beginning and 142.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:25,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.22 ms. Allocated memory is still 139.5 MB. Free memory was 100.7 MB in the beginning and 90.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.27 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 90.1 MB in the beginning and 179.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.80 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 480.48 ms. Allocated memory is still 201.9 MB. Free memory was 159.7 MB in the beginning and 142.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 53]: 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: [L4] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] CALL init_nondet(x) [L6] int i; [L7] i = 0 [L35] RET init_nondet(x) [L36] int temp; [L37] int ret; [L38] int ret2; [L39] int ret5; [L41] CALL, EXPR rangesum(x) [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 [L18] COND FALSE !(i < N) [L24] COND TRUE cnt !=0 [L25] return ret / cnt; [L41] RET, EXPR rangesum(x) [L41] ret = rangesum(x) [L43] EXPR x[0] [L43] temp=x[0] [L43] EXPR x[1] [L43] x[0] = x[1] [L43] x[1] = temp [L44] CALL, EXPR rangesum(x) [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 [L18] COND FALSE !(i < N) [L24] COND TRUE cnt !=0 [L25] return ret / cnt; [L44] RET, EXPR rangesum(x) [L44] ret2 = rangesum(x) [L45] EXPR x[0] [L45] temp=x[0] [L46] int i =0 ; [L46] COND FALSE !(i