/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:37,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:37,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:37,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:37,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:37,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:37,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:37,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:37,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:37,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:37,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:37,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:37,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:37,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:37,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:37,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:37,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:37,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:37,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:37,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:37,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:37,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:37,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:37,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:37,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:42:37,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:37,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:37,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:37,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:37,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:37,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:37,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:37,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:37,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:37,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:37,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:37,930 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 [2020-09-04 13:42:37,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:37,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:37,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:37,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:37,994 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:37,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:37,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:37,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:37,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:37,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:37,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:37,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:37,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:37,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:37,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:37,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:37,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:37,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:37,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:37,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:37,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:38,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:38,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:38,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:38,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:38,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:38,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:38,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:38,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:38,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:38,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:38,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:38,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:38,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:38,536 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:38,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-09-04 13:42:38,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/742811546/65632c125edc43cf9c2addd3bdab6f34/FLAG4fc2496b8 [2020-09-04 13:42:39,207 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:39,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1of.c [2020-09-04 13:42:39,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/742811546/65632c125edc43cf9c2addd3bdab6f34/FLAG4fc2496b8 [2020-09-04 13:42:39,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/742811546/65632c125edc43cf9c2addd3bdab6f34 [2020-09-04 13:42:39,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:39,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:39,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:39,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:39,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:39,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:39,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b5e0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39, skipping insertion in model container [2020-09-04 13:42:39,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:39,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:39,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:39,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:39,850 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:39,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:39,892 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:39,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39 WrapperNode [2020-09-04 13:42:39,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:39,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:39,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:39,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:39,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:39,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:40,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:40,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:40,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:40,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:40,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:40,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:40,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:40,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:40,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:40,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39" (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 [2020-09-04 13:42:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:40,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:40,483 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:40,484 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 13:42:40,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:40 BoogieIcfgContainer [2020-09-04 13:42:40,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:40,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:40,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:40,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:40,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:39" (1/3) ... [2020-09-04 13:42:40,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418bf0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:40, skipping insertion in model container [2020-09-04 13:42:40,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39" (2/3) ... [2020-09-04 13:42:40,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418bf0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:40, skipping insertion in model container [2020-09-04 13:42:40,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:40" (3/3) ... [2020-09-04 13:42:40,515 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-09-04 13:42:40,526 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:40,538 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:40,560 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:40,587 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:40,587 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:40,588 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:40,588 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:40,588 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:40,588 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:40,588 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:40,588 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-04 13:42:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 13:42:40,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:40,648 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] [2020-09-04 13:42:40,649 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:40,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-09-04 13:42:40,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:40,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417648523] [2020-09-04 13:42:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:40,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417648523] [2020-09-04 13:42:40,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:40,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:40,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889713187] [2020-09-04 13:42:40,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:40,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:40,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:40,940 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-09-04 13:42:41,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:41,093 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-09-04 13:42:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:41,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-04 13:42:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:41,105 INFO L225 Difference]: With dead ends: 64 [2020-09-04 13:42:41,105 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 13:42:41,110 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 [2020-09-04 13:42:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 13:42:41,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-04 13:42:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 13:42:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-09-04 13:42:41,155 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-09-04 13:42:41,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:41,156 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-09-04 13:42:41,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:41,157 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-09-04 13:42:41,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 13:42:41,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:41,158 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] [2020-09-04 13:42:41,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:41,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:41,159 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-09-04 13:42:41,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:41,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106537534] [2020-09-04 13:42:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:41,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:41,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106537534] [2020-09-04 13:42:41,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:41,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:42:41,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659224534] [2020-09-04 13:42:41,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:41,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:41,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:41,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:41,316 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-09-04 13:42:41,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:41,463 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-09-04 13:42:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:41,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-04 13:42:41,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:41,465 INFO L225 Difference]: With dead ends: 53 [2020-09-04 13:42:41,466 INFO L226 Difference]: Without dead ends: 38 [2020-09-04 13:42:41,467 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 [2020-09-04 13:42:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-04 13:42:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-09-04 13:42:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-04 13:42:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-09-04 13:42:41,478 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-09-04 13:42:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:41,479 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-09-04 13:42:41,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-09-04 13:42:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 13:42:41,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:41,481 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] [2020-09-04 13:42:41,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:42:41,482 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:41,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-09-04 13:42:41,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:41,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116532160] [2020-09-04 13:42:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:41,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:41,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:41,715 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:41,716 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:41,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:42:41,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:41 BoogieIcfgContainer [2020-09-04 13:42:41,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:41,803 INFO L168 Benchmark]: Toolchain (without parser) took 2236.87 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 97.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:41,804 INFO L168 Benchmark]: CDTParser took 1.48 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 13:42:41,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.74 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 91.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:41,806 INFO L168 Benchmark]: Boogie Preprocessor took 141.47 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 178.6 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:41,807 INFO L168 Benchmark]: RCFGBuilder took 457.27 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 160.4 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:41,808 INFO L168 Benchmark]: TraceAbstraction took 1304.19 ms. Allocated memory is still 201.3 MB. Free memory was 159.7 MB in the beginning and 97.9 MB in the end (delta: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:41,812 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.48 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.74 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 91.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.47 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 178.6 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.27 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 160.4 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1304.19 ms. Allocated memory is still 201.3 MB. Free memory was 159.7 MB in the beginning and 97.9 MB in the end (delta: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 0 [L31] i=0 VAL [\old(N)=0, a={-2:0}, b={-1:0}, i=0, malloc(sizeof(int)*N)={-2:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] COND TRUE i