/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=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:16:12,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:16:12,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:16:12,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:16:12,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:16:12,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:16:12,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:16:12,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:16:12,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:16:12,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:16:12,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:16:12,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:16:12,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:16:12,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:16:12,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:16:12,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:16:12,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:16:12,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:16:12,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:16:12,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:16:12,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:16:12,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:16:12,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:16:12,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:16:12,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:16:12,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:16:12,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:16:12,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:16:12,062 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 [2020-08-19 01:16:12,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:16:12,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:16:12,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:16:12,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:16:12,086 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:16:12,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:16:12,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:16:12,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:16:12,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:16:12,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:16:12,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:16:12,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:16:12,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:16:12,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:16:12,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:16:12,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:16:12,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:16:12,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:16:12,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:16:12,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:16:12,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:16:12,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:16:12,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:16:12,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:16:12,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:16:12,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:16:12,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:16:12,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:16:12,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:16:12,091 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=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:16:12,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:16:12,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:16:12,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:16:12,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:16:12,436 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:16:12,437 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3f.c [2020-08-19 01:16:12,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d3c9b58/7cfb19cdd1424e5aa7f956dbbb29d057/FLAGec0b43870 [2020-08-19 01:16:12,936 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:16:12,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss3f.c [2020-08-19 01:16:12,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d3c9b58/7cfb19cdd1424e5aa7f956dbbb29d057/FLAGec0b43870 [2020-08-19 01:16:13,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d3c9b58/7cfb19cdd1424e5aa7f956dbbb29d057 [2020-08-19 01:16:13,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:16:13,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:16:13,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:16:13,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:16:13,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:16:13,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:16:13" (1/1) ... [2020-08-19 01:16:13,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bfa12c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13, skipping insertion in model container [2020-08-19 01:16:13,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:16:13" (1/1) ... [2020-08-19 01:16:13,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:16:13,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:16:13,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:16:13,648 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:16:13,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:16:13,803 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:16:13,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13 WrapperNode [2020-08-19 01:16:13,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:16:13,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:16:13,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:16:13,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:16:13,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13" (1/1) ... [2020-08-19 01:16:13,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13" (1/1) ... [2020-08-19 01:16:13,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13" (1/1) ... [2020-08-19 01:16:13,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13" (1/1) ... [2020-08-19 01:16:13,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13" (1/1) ... [2020-08-19 01:16:13,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13" (1/1) ... [2020-08-19 01:16:13,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13" (1/1) ... [2020-08-19 01:16:13,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:16:13,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:16:13,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:16:13,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:16:13,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13" (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 01:16:13,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:16:13,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:16:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 01:16:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 01:16:13,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:16:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:16:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 01:16:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 01:16:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 01:16:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:16:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:16:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:16:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:16:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:16:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:16:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:16:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:16:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:16:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:16:14,330 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:16:14,330 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:16:14,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:16:14 BoogieIcfgContainer [2020-08-19 01:16:14,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:16:14,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:16:14,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:16:14,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:16:14,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:16:13" (1/3) ... [2020-08-19 01:16:14,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781a65a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:16:14, skipping insertion in model container [2020-08-19 01:16:14,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:13" (2/3) ... [2020-08-19 01:16:14,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781a65a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:16:14, skipping insertion in model container [2020-08-19 01:16:14,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:16:14" (3/3) ... [2020-08-19 01:16:14,351 INFO L109 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-08-19 01:16:14,363 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:16:14,371 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:16:14,385 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:16:14,411 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:16:14,411 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:16:14,411 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:16:14,411 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:16:14,412 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:16:14,412 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:16:14,412 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:16:14,412 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:16:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-19 01:16:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 01:16:14,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:14,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:14,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:16:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:14,449 INFO L82 PathProgramCache]: Analyzing trace with hash -976607933, now seen corresponding path program 1 times [2020-08-19 01:16:14,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:14,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763818463] [2020-08-19 01:16:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:14,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:16:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:14,697 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 01:16:14,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763818463] [2020-08-19 01:16:14,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:14,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:16:14,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438247430] [2020-08-19 01:16:14,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:16:14,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:14,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:16:14,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:16:14,720 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-19 01:16:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:14,860 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-08-19 01:16:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:16:14,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-08-19 01:16:14,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:14,871 INFO L225 Difference]: With dead ends: 70 [2020-08-19 01:16:14,872 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 01:16:14,876 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 01:16:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 01:16:14,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-19 01:16:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 01:16:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-19 01:16:14,920 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 27 [2020-08-19 01:16:14,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:14,921 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-19 01:16:14,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:16:14,922 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-19 01:16:14,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 01:16:14,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:14,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:14,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:16:14,924 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:16:14,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:14,925 INFO L82 PathProgramCache]: Analyzing trace with hash -714487667, now seen corresponding path program 1 times [2020-08-19 01:16:14,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:14,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179160638] [2020-08-19 01:16:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:15,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:15,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:16:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:15,092 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 01:16:15,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179160638] [2020-08-19 01:16:15,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:15,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:16:15,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669793438] [2020-08-19 01:16:15,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:16:15,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:15,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:16:15,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:16:15,099 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-19 01:16:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:15,276 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-08-19 01:16:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:16:15,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-19 01:16:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:15,278 INFO L225 Difference]: With dead ends: 61 [2020-08-19 01:16:15,279 INFO L226 Difference]: Without dead ends: 43 [2020-08-19 01:16:15,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:15,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-19 01:16:15,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-08-19 01:16:15,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-19 01:16:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-08-19 01:16:15,291 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-08-19 01:16:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:15,291 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-08-19 01:16:15,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:16:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-08-19 01:16:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 01:16:15,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:15,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:15,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:16:15,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:16:15,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1064141225, now seen corresponding path program 1 times [2020-08-19 01:16:15,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:15,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582551784] [2020-08-19 01:16:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:15,333 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-19 01:16:15,333 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-19 01:16:15,333 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:16:15,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:16:15,356 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-19 01:16:15,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:16:15 BoogieIcfgContainer [2020-08-19 01:16:15,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:16:15,359 INFO L168 Benchmark]: Toolchain (without parser) took 1998.76 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 101.2 MB in the beginning and 100.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:16:15,361 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 01:16:15,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.26 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 101.0 MB in the beginning and 182.2 MB in the end (delta: -81.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:16:15,363 INFO L168 Benchmark]: Boogie Preprocessor took 89.28 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 179.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:16:15,364 INFO L168 Benchmark]: RCFGBuilder took 448.01 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 161.0 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:16:15,365 INFO L168 Benchmark]: TraceAbstraction took 1013.82 ms. Allocated memory is still 203.4 MB. Free memory was 160.3 MB in the beginning and 100.0 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:16:15,369 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 440.26 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 101.0 MB in the beginning and 182.2 MB in the end (delta: -81.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.28 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 179.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.01 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 161.0 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1013.82 ms. Allocated memory is still 203.4 MB. Free memory was 160.3 MB in the beginning and 100.0 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 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 TRUE i