/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/ms5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:34,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:34,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:34,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:34,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:34,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:34,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:34,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:34,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:34,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:34,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:34,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:34,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:34,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:34,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:34,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:34,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:34,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:34,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:34,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:34,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:34,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:34,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:34,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:34,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:42:34,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:42:34,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:42:34,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:42:34,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:42:34,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:42:34,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:34,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:34,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:34,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:34,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:34,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:34,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:34,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:34,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:34,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:34,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:34,857 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 13:42:34,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:34,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:34,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:34,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:34,911 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:34,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:34,911 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:34,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:34,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:34,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:34,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:34,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:34,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:34,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:34,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:34,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:34,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:34,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:34,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:34,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:34,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:34,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:34,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:34,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:34,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:34,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:34,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:34,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:34,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:34,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:35,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:35,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:35,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:35,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:35,422 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:35,424 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms5f.c [2020-09-04 13:42:35,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4d7f30de/479459144ebc4d10977e39cad3c4bfd5/FLAGb4aef7605 [2020-09-04 13:42:36,099 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:36,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms5f.c [2020-09-04 13:42:36,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4d7f30de/479459144ebc4d10977e39cad3c4bfd5/FLAGb4aef7605 [2020-09-04 13:42:36,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4d7f30de/479459144ebc4d10977e39cad3c4bfd5 [2020-09-04 13:42:36,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:36,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:36,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:36,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:36,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:36,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cbebf29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36, skipping insertion in model container [2020-09-04 13:42:36,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:36,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:36,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:36,794 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:36,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:36,839 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:36,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36 WrapperNode [2020-09-04 13:42:36,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:36,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:36,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:36,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:36,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:36,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:36,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:36,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:36,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (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 13:42:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:37,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:37,403 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 13:42:37,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:37 BoogieIcfgContainer [2020-09-04 13:42:37,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:37,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:37,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:37,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:37,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:36" (1/3) ... [2020-09-04 13:42:37,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aac8115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:37, skipping insertion in model container [2020-09-04 13:42:37,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (2/3) ... [2020-09-04 13:42:37,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aac8115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:37, skipping insertion in model container [2020-09-04 13:42:37,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:37" (3/3) ... [2020-09-04 13:42:37,419 INFO L109 eAbstractionObserver]: Analyzing ICFG ms5f.c [2020-09-04 13:42:37,431 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:37,440 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:37,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:37,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:37,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:37,486 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:37,486 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:37,486 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:37,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:37,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:37,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-09-04 13:42:37,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:42:37,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:37,517 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] [2020-09-04 13:42:37,517 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:37,524 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-09-04 13:42:37,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:37,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509670154] [2020-09-04 13:42:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:37,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:37,776 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 13:42:37,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509670154] [2020-09-04 13:42:37,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:37,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:37,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140938945] [2020-09-04 13:42:37,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:37,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:37,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:37,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:37,809 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-09-04 13:42:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:37,940 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-09-04 13:42:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:37,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-04 13:42:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:37,951 INFO L225 Difference]: With dead ends: 54 [2020-09-04 13:42:37,952 INFO L226 Difference]: Without dead ends: 25 [2020-09-04 13:42:37,956 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 13:42:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-04 13:42:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-04 13:42:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-04 13:42:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-09-04 13:42:38,002 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-09-04 13:42:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:38,003 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-09-04 13:42:38,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:38,003 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-09-04 13:42:38,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:42:38,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:38,005 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] [2020-09-04 13:42:38,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:38,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:38,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-09-04 13:42:38,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:38,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667797222] [2020-09-04 13:42:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:38,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:38,168 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 13:42:38,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667797222] [2020-09-04 13:42:38,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:38,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:42:38,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122259963] [2020-09-04 13:42:38,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:38,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:38,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:38,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:38,173 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-09-04 13:42:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:38,304 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-09-04 13:42:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:38,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-04 13:42:38,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:38,307 INFO L225 Difference]: With dead ends: 40 [2020-09-04 13:42:38,307 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 13:42:38,308 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 13:42:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 13:42:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-04 13:42:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-04 13:42:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-04 13:42:38,317 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-09-04 13:42:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:38,318 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-04 13:42:38,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-04 13:42:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 13:42:38,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:38,319 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] [2020-09-04 13:42:38,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:42:38,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:38,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:38,320 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-09-04 13:42:38,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:38,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595923622] [2020-09-04 13:42:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:38,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:38,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:38,481 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:38,482 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:38,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:42:38,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:38 BoogieIcfgContainer [2020-09-04 13:42:38,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:38,549 INFO L168 Benchmark]: Toolchain (without parser) took 2117.78 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 104.6 MB in the beginning and 109.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,550 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.58 ms. Allocated memory is still 141.0 MB. Free memory was 104.6 MB in the beginning and 94.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,553 INFO L168 Benchmark]: Boogie Preprocessor took 129.07 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 181.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,554 INFO L168 Benchmark]: RCFGBuilder took 437.85 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 165.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,555 INFO L168 Benchmark]: TraceAbstraction took 1136.43 ms. Allocated memory is still 203.9 MB. Free memory was 164.4 MB in the beginning and 109.4 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,559 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 408.58 ms. Allocated memory is still 141.0 MB. Free memory was 104.6 MB in the beginning and 94.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.07 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 181.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.85 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 165.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1136.43 ms. Allocated memory is still 203.9 MB. Free memory was 164.4 MB in the beginning and 109.4 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 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); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] COND TRUE i 4*N) VAL [\old(cond)=0, \old(N)=0, N=1] [L13] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L13] __VERIFIER_error() VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 64 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...