/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifcompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:57:56,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:57:56,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:57:56,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:57:56,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:57:56,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:57:56,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:57:56,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:57:56,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:57:56,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:57:56,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:57:56,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:57:56,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:57:56,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:57:56,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:57:56,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:57:56,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:57:56,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:57:56,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:57:56,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:57:56,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:57:56,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:57:56,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:57:56,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:57:56,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:57:56,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:57:56,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:57:56,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:57:56,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:57:56,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:57:56,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:57:56,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:57:56,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:57:56,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:57:56,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:57:56,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:57:56,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:57:56,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:57:56,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:57:56,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:57:56,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:57:56,892 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 [2020-08-27 21:57:56,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:57:56,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:57:56,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:57:56,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:57:56,923 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:57:56,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:57:56,924 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:57:56,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:57:56,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:57:56,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:57:56,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:57:56,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:57:56,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:57:56,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:57:56,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:57:56,927 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:57:56,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:57:56,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:57:56,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:57:56,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:57:56,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:57:56,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:57:56,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:57:56,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:57:56,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:57:56,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:57:56,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:57:56,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:57:56,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:57:56,931 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 -> false [2020-08-27 21:57:57,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:57:57,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:57:57,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:57:57,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:57:57,413 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:57:57,414 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifcompf.c [2020-08-27 21:57:57,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/505dda3db/f699b0fdc1a0434b8eb7ee45ab8d28b9/FLAG16ba7a07e [2020-08-27 21:57:58,080 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:57:58,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifcompf.c [2020-08-27 21:57:58,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/505dda3db/f699b0fdc1a0434b8eb7ee45ab8d28b9/FLAG16ba7a07e [2020-08-27 21:57:58,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/505dda3db/f699b0fdc1a0434b8eb7ee45ab8d28b9 [2020-08-27 21:57:58,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:57:58,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:57:58,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:57:58,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:57:58,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:57:58,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:57:58" (1/1) ... [2020-08-27 21:57:58,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f43d38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58, skipping insertion in model container [2020-08-27 21:57:58,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:57:58" (1/1) ... [2020-08-27 21:57:58,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:57:58,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:57:58,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:57:58,756 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:57:58,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:57:58,798 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:57:58,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58 WrapperNode [2020-08-27 21:57:58,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:57:58,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:57:58,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:57:58,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:57:58,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58" (1/1) ... [2020-08-27 21:57:58,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58" (1/1) ... [2020-08-27 21:57:58,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58" (1/1) ... [2020-08-27 21:57:58,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58" (1/1) ... [2020-08-27 21:57:58,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58" (1/1) ... [2020-08-27 21:57:58,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58" (1/1) ... [2020-08-27 21:57:58,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58" (1/1) ... [2020-08-27 21:57:58,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:57:58,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:57:58,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:57:58,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:57:58,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58" (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 [2020-08-27 21:57:59,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:57:59,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:57:59,000 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-27 21:57:59,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-27 21:57:59,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:57:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:57:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-27 21:57:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-27 21:57:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-27 21:57:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:57:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:57:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:57:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:57:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:57:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:57:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:57:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:57:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:57:59,321 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:57:59,322 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-27 21:57:59,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:57:59 BoogieIcfgContainer [2020-08-27 21:57:59,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:57:59,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:57:59,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:57:59,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:57:59,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:57:58" (1/3) ... [2020-08-27 21:57:59,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c083e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:57:59, skipping insertion in model container [2020-08-27 21:57:59,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:57:58" (2/3) ... [2020-08-27 21:57:59,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c083e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:57:59, skipping insertion in model container [2020-08-27 21:57:59,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:57:59" (3/3) ... [2020-08-27 21:57:59,339 INFO L109 eAbstractionObserver]: Analyzing ICFG ifcompf.c [2020-08-27 21:57:59,353 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:57:59,363 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:57:59,389 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:57:59,437 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:57:59,438 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:57:59,438 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:57:59,438 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:57:59,438 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:57:59,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:57:59,439 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:57:59,439 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:57:59,466 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-27 21:57:59,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-27 21:57:59,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:57:59,476 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] [2020-08-27 21:57:59,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:57:59,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:57:59,483 INFO L82 PathProgramCache]: Analyzing trace with hash -794599326, now seen corresponding path program 1 times [2020-08-27 21:57:59,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:57:59,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288542245] [2020-08-27 21:57:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:57:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:57:59,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:57:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:57:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 21:57:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:57:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:57:59,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288542245] [2020-08-27 21:57:59,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:57:59,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:57:59,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286394180] [2020-08-27 21:57:59,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:57:59,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:57:59,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:57:59,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:57:59,772 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-27 21:57:59,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:57:59,915 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-08-27 21:57:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:57:59,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-27 21:57:59,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:57:59,929 INFO L225 Difference]: With dead ends: 70 [2020-08-27 21:57:59,930 INFO L226 Difference]: Without dead ends: 35 [2020-08-27 21:57:59,934 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 [2020-08-27 21:57:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-27 21:57:59,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-27 21:57:59,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-27 21:57:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-08-27 21:57:59,988 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2020-08-27 21:57:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:57:59,989 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-08-27 21:57:59,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:57:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-08-27 21:57:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-27 21:57:59,991 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:57:59,991 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] [2020-08-27 21:57:59,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:57:59,992 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:57:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:57:59,993 INFO L82 PathProgramCache]: Analyzing trace with hash -544938994, now seen corresponding path program 1 times [2020-08-27 21:57:59,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:57:59,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770809228] [2020-08-27 21:57:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:58:00,038 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-27 21:58:00,038 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-27 21:58:00,038 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:58:00,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:58:00,061 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-27 21:58:00,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:58:00 BoogieIcfgContainer [2020-08-27 21:58:00,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:58:00,065 INFO L168 Benchmark]: Toolchain (without parser) took 1598.56 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 127.3 MB in the end (delta: -24.1 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:58:00,066 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:58:00,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.73 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 92.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-27 21:58:00,069 INFO L168 Benchmark]: Boogie Preprocessor took 128.02 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 180.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:58:00,070 INFO L168 Benchmark]: RCFGBuilder took 400.78 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 161.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-08-27 21:58:00,071 INFO L168 Benchmark]: TraceAbstraction took 732.27 ms. Allocated memory is still 202.9 MB. Free memory was 160.9 MB in the beginning and 127.3 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2020-08-27 21:58:00,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.73 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 92.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.02 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 180.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 400.78 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 161.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 732.27 ms. Allocated memory is still 202.9 MB. Free memory was 160.9 MB in the beginning and 127.3 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND FALSE !(i