/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/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:29,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:29,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:29,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 22:44:29,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:29,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:29,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:29,329 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 [2020-11-06 22:44:29,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:29,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:29,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:29,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:29,384 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:29,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:29,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:29,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:29,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:29,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:29,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:29,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:29,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:29,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:29,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:29,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:29,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:29,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:29,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:29,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:29,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:29,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:29,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:29,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:29,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:29,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:29,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:29,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:29,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:29,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:29,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:29,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:29,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:29,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:29,829 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:29,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2020-11-06 22:44:29,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f3a349fe/7b32aa41745247db87f1f3e0303763c1/FLAGd133a5922 [2020-11-06 22:44:30,583 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:30,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2of.c [2020-11-06 22:44:30,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f3a349fe/7b32aa41745247db87f1f3e0303763c1/FLAGd133a5922 [2020-11-06 22:44:30,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f3a349fe/7b32aa41745247db87f1f3e0303763c1 [2020-11-06 22:44:30,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:30,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:30,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:30,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:30,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:30,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:30" (1/1) ... [2020-11-06 22:44:30,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac65091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:30, skipping insertion in model container [2020-11-06 22:44:30,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:30" (1/1) ... [2020-11-06 22:44:30,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:31,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:31,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:31,302 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:31,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:31,380 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:31,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31 WrapperNode [2020-11-06 22:44:31,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:31,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:31,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:31,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:31,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31" (1/1) ... [2020-11-06 22:44:31,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31" (1/1) ... [2020-11-06 22:44:31,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31" (1/1) ... [2020-11-06 22:44:31,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31" (1/1) ... [2020-11-06 22:44:31,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31" (1/1) ... [2020-11-06 22:44:31,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31" (1/1) ... [2020-11-06 22:44:31,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31" (1/1) ... [2020-11-06 22:44:31,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:31,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:31,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:31,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:31,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31" (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 [2020-11-06 22:44:31,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:31,555 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:31,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:31,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:32,291 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:32,291 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-06 22:44:32,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:32 BoogieIcfgContainer [2020-11-06 22:44:32,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:32,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:32,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:32,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:32,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:30" (1/3) ... [2020-11-06 22:44:32,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:32, skipping insertion in model container [2020-11-06 22:44:32,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:31" (2/3) ... [2020-11-06 22:44:32,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:32, skipping insertion in model container [2020-11-06 22:44:32,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:32" (3/3) ... [2020-11-06 22:44:32,303 INFO L111 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-11-06 22:44:32,320 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:32,324 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:32,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:32,366 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:32,367 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:32,367 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:32,367 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:32,367 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:32,367 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:32,367 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:32,368 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-11-06 22:44:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-06 22:44:32,394 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:32,395 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] [2020-11-06 22:44:32,396 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:32,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:32,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1686177906, now seen corresponding path program 1 times [2020-11-06 22:44:32,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:32,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534806573] [2020-11-06 22:44:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:32,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:32,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:32,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534806573] [2020-11-06 22:44:32,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:32,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:32,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018859114] [2020-11-06 22:44:32,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:32,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:32,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:32,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:32,746 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2020-11-06 22:44:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:32,904 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2020-11-06 22:44:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:32,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-06 22:44:32,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:32,915 INFO L225 Difference]: With dead ends: 81 [2020-11-06 22:44:32,916 INFO L226 Difference]: Without dead ends: 37 [2020-11-06 22:44:32,920 INFO L677 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 [2020-11-06 22:44:32,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-06 22:44:32,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-06 22:44:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-06 22:44:32,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-11-06 22:44:32,966 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 30 [2020-11-06 22:44:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:32,967 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-11-06 22:44:32,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:32,967 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-11-06 22:44:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-06 22:44:32,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:32,969 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] [2020-11-06 22:44:32,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:32,969 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -961350168, now seen corresponding path program 1 times [2020-11-06 22:44:32,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:32,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519306320] [2020-11-06 22:44:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:33,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:33,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519306320] [2020-11-06 22:44:33,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:33,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:33,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788199410] [2020-11-06 22:44:33,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:33,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:33,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:33,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:33,146 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 5 states. [2020-11-06 22:44:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:33,407 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2020-11-06 22:44:33,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:33,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-06 22:44:33,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:33,410 INFO L225 Difference]: With dead ends: 71 [2020-11-06 22:44:33,410 INFO L226 Difference]: Without dead ends: 49 [2020-11-06 22:44:33,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:44:33,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-06 22:44:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-11-06 22:44:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-06 22:44:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-11-06 22:44:33,426 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 30 [2020-11-06 22:44:33,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:33,426 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-11-06 22:44:33,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-11-06 22:44:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-06 22:44:33,428 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:33,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:33,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:33,429 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:33,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:33,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1706440668, now seen corresponding path program 1 times [2020-11-06 22:44:33,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:33,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788836736] [2020-11-06 22:44:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:33,581 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:33,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:33,741 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:33,742 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:33,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:44:33,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:33 BoogieIcfgContainer [2020-11-06 22:44:33,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:33,817 INFO L168 Benchmark]: Toolchain (without parser) took 2854.34 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 127.1 MB in the end (delta: -663.5 kB). Peak memory consumption was 82.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:33,818 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:33,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.54 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:33,820 INFO L168 Benchmark]: Boogie Preprocessor took 51.10 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:33,821 INFO L168 Benchmark]: RCFGBuilder took 859.53 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 128.5 MB in the end (delta: -15.1 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:33,822 INFO L168 Benchmark]: TraceAbstraction took 1518.85 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 127.1 MB in the end (delta: 884.0 kB). Peak memory consumption was 82.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:33,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 409.54 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.10 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 859.53 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 128.5 MB in the end (delta: -15.1 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1518.85 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 127.1 MB in the end (delta: 884.0 kB). Peak memory consumption was 82.8 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)=51, 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); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 0 [L34] i=0 VAL [\old(N)=0, a={-2:0}, b={5:0}, c={-1:0}, i=0, malloc(sizeof(int)*N)={5:0}, malloc(sizeof(int)*N)={-2:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={7:0}] [L34] COND TRUE i