/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=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:27:23,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:27:23,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:27:23,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:27:23,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:27:23,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:27:23,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:27:23,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:27:23,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:27:23,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:27:23,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:27:23,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:27:23,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:27:23,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:27:23,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:27:23,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:27:23,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:27:23,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:27:23,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:27:23,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:27:23,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:27:23,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:27:23,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:27:23,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:27:23,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:27:23,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:27:23,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:27:23,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:27:23,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:27:23,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 00:27:23,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:27:23,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:27:23,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:27:23,797 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 [2020-08-19 00:27:23,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:27:23,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:27:23,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:27:23,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:27:23,821 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:27:23,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:27:23,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:27:23,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:27:23,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:27:23,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:27:23,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:27:23,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:27:23,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:27:23,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:27:23,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:27:23,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:27:23,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:27:23,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:27:23,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:27:23,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:27:23,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:27:23,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:27:23,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:27:23,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:27:23,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:27:23,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:27:23,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:27:23,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:27:23,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:27:23,826 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:27:24,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:27:24,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:27:24,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:27:24,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:27:24,172 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:27:24,173 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss4f.c [2020-08-19 00:27:24,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/214cd596a/d818ba02c805494a891daa2a8d798e31/FLAGd0dd6263c [2020-08-19 00:27:24,762 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:27:24,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss4f.c [2020-08-19 00:27:24,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/214cd596a/d818ba02c805494a891daa2a8d798e31/FLAGd0dd6263c [2020-08-19 00:27:25,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/214cd596a/d818ba02c805494a891daa2a8d798e31 [2020-08-19 00:27:25,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:27:25,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:27:25,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:27:25,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:27:25,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:27:25,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:25,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ae34dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25, skipping insertion in model container [2020-08-19 00:27:25,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:25,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:27:25,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:27:25,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:27:25,328 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:27:25,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:27:25,367 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:27:25,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25 WrapperNode [2020-08-19 00:27:25,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:27:25,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:27:25,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:27:25,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:27:25,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:25,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:25,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:25,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:25,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:25,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:25,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:25,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:27:25,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:27:25,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:27:25,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:27:25,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25" (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 [2020-08-19 00:27:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:27:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:27:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 00:27:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 00:27:25,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:27:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:27:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 00:27:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 00:27:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 00:27:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:27:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:27:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:27:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:27:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:27:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:27:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:27:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:27:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:27:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:27:25,891 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:27:25,892 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 00:27:25,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:27:25 BoogieIcfgContainer [2020-08-19 00:27:25,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:27:25,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:27:25,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:27:25,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:27:25,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:27:25" (1/3) ... [2020-08-19 00:27:25,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a4333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:27:25, skipping insertion in model container [2020-08-19 00:27:25,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:25" (2/3) ... [2020-08-19 00:27:25,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a4333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:27:25, skipping insertion in model container [2020-08-19 00:27:25,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:27:25" (3/3) ... [2020-08-19 00:27:25,904 INFO L109 eAbstractionObserver]: Analyzing ICFG ss4f.c [2020-08-19 00:27:25,914 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:27:25,921 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:27:25,936 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:27:25,957 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:27:25,957 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:27:25,957 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:27:25,957 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:27:25,957 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:27:25,957 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:27:25,957 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:27:25,957 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:27:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-19 00:27:25,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 00:27:25,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:25,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:25,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:25,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:25,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-19 00:27:25,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:25,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398498147] [2020-08-19 00:27:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:26,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:27:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:26,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:27:26,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398498147] [2020-08-19 00:27:26,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:27:26,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:27:26,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545604306] [2020-08-19 00:27:26,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:27:26,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:26,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:27:26,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:27:26,232 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-19 00:27:26,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:26,362 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-19 00:27:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:27:26,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-19 00:27:26,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:26,374 INFO L225 Difference]: With dead ends: 64 [2020-08-19 00:27:26,374 INFO L226 Difference]: Without dead ends: 30 [2020-08-19 00:27:26,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:27:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-19 00:27:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-19 00:27:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 00:27:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-19 00:27:26,423 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-19 00:27:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:26,424 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-19 00:27:26,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:27:26,425 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-19 00:27:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 00:27:26,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:26,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:26,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:27:26,427 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:26,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:26,428 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-19 00:27:26,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:26,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044266153] [2020-08-19 00:27:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:26,475 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-19 00:27:26,475 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-19 00:27:26,475 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:27:26,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:27:26,497 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-19 00:27:26,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:27:26 BoogieIcfgContainer [2020-08-19 00:27:26,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:27:26,501 INFO L168 Benchmark]: Toolchain (without parser) took 1397.64 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 103.0 MB in the beginning and 128.0 MB in the end (delta: -25.0 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:26,502 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:27:26,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.92 ms. Allocated memory is still 139.5 MB. Free memory was 102.8 MB in the beginning and 92.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:26,504 INFO L168 Benchmark]: Boogie Preprocessor took 111.88 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 92.0 MB in the beginning and 179.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:26,505 INFO L168 Benchmark]: RCFGBuilder took 415.66 ms. Allocated memory is still 201.3 MB. Free memory was 178.9 MB in the beginning and 160.6 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:26,506 INFO L168 Benchmark]: TraceAbstraction took 600.34 ms. Allocated memory is still 201.3 MB. Free memory was 159.9 MB in the beginning and 128.0 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:26,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.92 ms. Allocated memory is still 139.5 MB. Free memory was 102.8 MB in the beginning and 92.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.88 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 92.0 MB in the beginning and 179.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 415.66 ms. Allocated memory is still 201.3 MB. Free memory was 178.9 MB in the beginning and 160.6 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 600.34 ms. Allocated memory is still 201.3 MB. Free memory was 159.9 MB in the beginning and 128.0 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND FALSE !(i