/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/ms4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:10,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:10,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:10,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:10,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:10,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:10,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:10,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:10,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:10,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:10,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:10,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:10,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:10,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:10,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:10,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:10,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:10,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:10,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:10,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:10,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:10,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:10,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:10,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:10,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:10,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:10,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:10,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:10,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:42:10,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:10,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:10,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:10,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:10,557 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:10,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:10,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:10,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:10,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:10,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:10,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:10,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:10,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:10,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:10,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:10,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:10,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:10,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:10,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:10,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:10,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:10,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:10,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:10,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:10,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:10,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:10,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:10,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:10,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:10,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:10,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:11,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:11,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:11,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:11,022 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:11,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms4f.c [2020-10-23 18:42:11,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169c27887/2d9eba66efd14cb28184f9c911d7c506/FLAG578cdb623 [2020-10-23 18:42:11,676 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:11,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms4f.c [2020-10-23 18:42:11,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169c27887/2d9eba66efd14cb28184f9c911d7c506/FLAG578cdb623 [2020-10-23 18:42:12,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169c27887/2d9eba66efd14cb28184f9c911d7c506 [2020-10-23 18:42:12,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:12,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:12,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:12,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:12,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:12,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:12" (1/1) ... [2020-10-23 18:42:12,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201d1508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12, skipping insertion in model container [2020-10-23 18:42:12,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:12" (1/1) ... [2020-10-23 18:42:12,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:12,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:12,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:12,273 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:12,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:12,315 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:12,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12 WrapperNode [2020-10-23 18:42:12,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:12,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:12,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:12,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:12,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12" (1/1) ... [2020-10-23 18:42:12,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12" (1/1) ... [2020-10-23 18:42:12,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12" (1/1) ... [2020-10-23 18:42:12,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12" (1/1) ... [2020-10-23 18:42:12,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12" (1/1) ... [2020-10-23 18:42:12,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12" (1/1) ... [2020-10-23 18:42:12,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12" (1/1) ... [2020-10-23 18:42:12,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:12,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:12,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:12,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:12,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-23 18:42:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:12,845 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:12,845 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 18:42:12,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:12 BoogieIcfgContainer [2020-10-23 18:42:12,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:12,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:12,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:12,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:12,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:12" (1/3) ... [2020-10-23 18:42:12,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdaffe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:12, skipping insertion in model container [2020-10-23 18:42:12,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:12" (2/3) ... [2020-10-23 18:42:12,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdaffe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:12, skipping insertion in model container [2020-10-23 18:42:12,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:12" (3/3) ... [2020-10-23 18:42:12,882 INFO L111 eAbstractionObserver]: Analyzing ICFG ms4f.c [2020-10-23 18:42:12,895 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:12,901 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:12,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:12,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:12,949 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:12,949 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:12,949 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:12,949 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:12,949 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:12,950 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:12,950 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-23 18:42:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:42:12,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:12,979 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] [2020-10-23 18:42:12,979 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:12,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:12,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-23 18:42:12,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:12,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928379037] [2020-10-23 18:42:12,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:13,358 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-23 18:42:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:13,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:13,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928379037] [2020-10-23 18:42:13,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:13,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:13,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325541540] [2020-10-23 18:42:13,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:13,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:13,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:13,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:13,438 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-23 18:42:13,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:13,593 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-23 18:42:13,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:13,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-23 18:42:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:13,604 INFO L225 Difference]: With dead ends: 59 [2020-10-23 18:42:13,604 INFO L226 Difference]: Without dead ends: 26 [2020-10-23 18:42:13,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-23 18:42:13,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-23 18:42:13,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-23 18:42:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-23 18:42:13,655 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-10-23 18:42:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:13,655 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-23 18:42:13,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-23 18:42:13,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:42:13,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:13,657 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] [2020-10-23 18:42:13,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:13,658 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:13,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:13,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-10-23 18:42:13,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:13,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691415561] [2020-10-23 18:42:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:13,903 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-23 18:42:13,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:13,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691415561] [2020-10-23 18:42:13,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:13,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:42:13,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979065678] [2020-10-23 18:42:13,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:42:13,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:13,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:42:13,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:42:13,966 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-23 18:42:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:14,238 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-10-23 18:42:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:42:14,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-23 18:42:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:14,240 INFO L225 Difference]: With dead ends: 42 [2020-10-23 18:42:14,241 INFO L226 Difference]: Without dead ends: 31 [2020-10-23 18:42:14,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:42:14,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-23 18:42:14,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-23 18:42:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 18:42:14,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-23 18:42:14,253 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-10-23 18:42:14,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:14,253 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-23 18:42:14,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:42:14,254 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-23 18:42:14,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 18:42:14,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:14,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:14,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:42:14,256 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:14,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:14,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-23 18:42:14,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:14,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021749625] [2020-10-23 18:42:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:14,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:14,363 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:14,398 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:14,399 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:14,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:42:14,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:14 BoogieIcfgContainer [2020-10-23 18:42:14,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:14,447 INFO L168 Benchmark]: Toolchain (without parser) took 2385.78 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 66.0 MB in the end (delta: 60.1 MB). Peak memory consumption was 60.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:14,448 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:14,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 115.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:14,450 INFO L168 Benchmark]: Boogie Preprocessor took 43.11 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:14,451 INFO L168 Benchmark]: RCFGBuilder took 486.64 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 98.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:14,453 INFO L168 Benchmark]: TraceAbstraction took 1595.55 ms. Allocated memory is still 151.0 MB. Free memory was 97.6 MB in the beginning and 66.0 MB in the end (delta: 31.6 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:14,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 115.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.11 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 486.64 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 98.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1595.55 ms. Allocated memory is still 151.0 MB. Free memory was 97.6 MB in the beginning and 66.0 MB in the end (delta: 31.6 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=118, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={9:0}] [L31] COND TRUE i 3*N) VAL [\old(cond)=0, \old(N)=0, N=1] [L15] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L15] CALL reach_error() VAL [\old(N)=0, N=1] [L10] __assert_fail("0", "ms4f.c", 10, "reach_error") VAL [\old(N)=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 65 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 0.5s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 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...