/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-tiling/skippedu.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:23:13,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:23:13,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:23:13,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:23:13,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:23:13,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:23:13,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:23:13,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:23:13,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:23:13,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:23:13,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:23:13,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:23:13,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:23:13,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:23:13,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:23:13,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:23:13,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:23:13,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:23:13,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:23:13,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:23:13,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:23:13,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:23:13,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:23:13,331 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:23:13,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:23:13,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:23:13,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:23:13,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:23:13,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:23:13,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:23:13,332 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:23:13,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:23:13,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:23:13,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:23:13,808 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:23:13,809 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:23:13,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2020-10-24 02:23:13,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/095af5344/b30a0cb214804e49bef491448efca5ef/FLAGbb83eecb1 [2020-10-24 02:23:14,484 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:23:14,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skippedu.c [2020-10-24 02:23:14,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/095af5344/b30a0cb214804e49bef491448efca5ef/FLAGbb83eecb1 [2020-10-24 02:23:14,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/095af5344/b30a0cb214804e49bef491448efca5ef [2020-10-24 02:23:14,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:23:14,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:23:14,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:23:14,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:23:14,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:23:14,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:14" (1/1) ... [2020-10-24 02:23:14,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac2e17f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:14, skipping insertion in model container [2020-10-24 02:23:14,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:14" (1/1) ... [2020-10-24 02:23:14,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:23:14,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:23:15,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:23:15,063 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:23:15,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:23:15,103 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:23:15,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:15 WrapperNode [2020-10-24 02:23:15,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:23:15,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:23:15,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:23:15,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:23:15,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:15" (1/1) ... [2020-10-24 02:23:15,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:15" (1/1) ... [2020-10-24 02:23:15,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:15" (1/1) ... [2020-10-24 02:23:15,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:15" (1/1) ... [2020-10-24 02:23:15,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:15" (1/1) ... [2020-10-24 02:23:15,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:15" (1/1) ... [2020-10-24 02:23:15,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:15" (1/1) ... [2020-10-24 02:23:15,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:23:15,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:23:15,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:23:15,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:23:15,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:15" (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 [2020-10-24 02:23:15,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:23:15,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:23:15,249 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:23:15,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:23:15,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:23:15,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:23:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:23:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:23:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:23:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:23:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:23:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:23:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:23:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 02:23:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:23:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 02:23:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:23:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:23:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:23:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:23:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:23:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:23:15,866 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:23:15,867 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-24 02:23:15,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:15 BoogieIcfgContainer [2020-10-24 02:23:15,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:23:15,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:23:15,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:23:15,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:23:15,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:23:14" (1/3) ... [2020-10-24 02:23:15,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c6c391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:15, skipping insertion in model container [2020-10-24 02:23:15,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:15" (2/3) ... [2020-10-24 02:23:15,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c6c391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:15, skipping insertion in model container [2020-10-24 02:23:15,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:15" (3/3) ... [2020-10-24 02:23:15,880 INFO L111 eAbstractionObserver]: Analyzing ICFG skippedu.c [2020-10-24 02:23:15,893 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:23:15,899 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:23:15,914 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:23:15,954 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:23:15,955 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:23:15,955 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:23:15,955 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:23:15,955 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:23:15,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:23:15,956 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:23:15,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:23:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-10-24 02:23:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-24 02:23:15,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:15,995 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] [2020-10-24 02:23:15,995 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:16,006 INFO L82 PathProgramCache]: Analyzing trace with hash 197142043, now seen corresponding path program 1 times [2020-10-24 02:23:16,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:16,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336788042] [2020-10-24 02:23:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:23:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-24 02:23:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:23:16,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336788042] [2020-10-24 02:23:16,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:23:16,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 02:23:16,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757929982] [2020-10-24 02:23:16,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 02:23:16,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:23:16,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 02:23:16,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:23:16,464 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 3 states. [2020-10-24 02:23:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:23:16,774 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2020-10-24 02:23:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 02:23:16,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-10-24 02:23:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:23:16,800 INFO L225 Difference]: With dead ends: 118 [2020-10-24 02:23:16,800 INFO L226 Difference]: Without dead ends: 65 [2020-10-24 02:23:16,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:23:16,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-24 02:23:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-24 02:23:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-24 02:23:16,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-24 02:23:16,892 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 39 [2020-10-24 02:23:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:23:16,893 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-24 02:23:16,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 02:23:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-24 02:23:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-24 02:23:16,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:16,896 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] [2020-10-24 02:23:16,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:23:16,897 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:16,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:16,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1804362736, now seen corresponding path program 1 times [2020-10-24 02:23:16,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:16,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991242950] [2020-10-24 02:23:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:23:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-24 02:23:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:23:17,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991242950] [2020-10-24 02:23:17,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:23:17,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 02:23:17,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146184065] [2020-10-24 02:23:17,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:23:17,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:23:17,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:23:17,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:23:17,055 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2020-10-24 02:23:17,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:23:17,342 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2020-10-24 02:23:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:23:17,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-24 02:23:17,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:23:17,358 INFO L225 Difference]: With dead ends: 113 [2020-10-24 02:23:17,359 INFO L226 Difference]: Without dead ends: 77 [2020-10-24 02:23:17,360 INFO L677 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 [2020-10-24 02:23:17,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-24 02:23:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-24 02:23:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-24 02:23:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-24 02:23:17,379 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 39 [2020-10-24 02:23:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:23:17,379 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-24 02:23:17,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:23:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-24 02:23:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-24 02:23:17,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:17,381 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, 1, 1, 1, 1] [2020-10-24 02:23:17,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:23:17,382 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:17,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:17,382 INFO L82 PathProgramCache]: Analyzing trace with hash -950812081, now seen corresponding path program 1 times [2020-10-24 02:23:17,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:17,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674841188] [2020-10-24 02:23:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:17,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:23:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:17,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-24 02:23:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:23:17,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674841188] [2020-10-24 02:23:17,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:23:17,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 02:23:17,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969137279] [2020-10-24 02:23:17,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:23:17,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:23:17,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:23:17,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:23:17,531 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 7 states. [2020-10-24 02:23:17,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:23:17,845 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-24 02:23:17,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 02:23:17,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-24 02:23:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:23:17,847 INFO L225 Difference]: With dead ends: 117 [2020-10-24 02:23:17,847 INFO L226 Difference]: Without dead ends: 81 [2020-10-24 02:23:17,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:23:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-24 02:23:17,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2020-10-24 02:23:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-24 02:23:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-24 02:23:17,863 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 46 [2020-10-24 02:23:17,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:23:17,863 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-24 02:23:17,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:23:17,864 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-24 02:23:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-24 02:23:17,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:17,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-10-24 02:23:17,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:23:17,866 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:17,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:17,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1786321104, now seen corresponding path program 2 times [2020-10-24 02:23:17,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:17,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243230231] [2020-10-24 02:23:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:18,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:23:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:18,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 02:23:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-24 02:23:18,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243230231] [2020-10-24 02:23:18,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:23:18,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:23:18,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834563973] [2020-10-24 02:23:18,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:23:18,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:23:18,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:23:18,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:23:18,147 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2020-10-24 02:23:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:23:18,359 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2020-10-24 02:23:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:23:18,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-24 02:23:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:23:18,362 INFO L225 Difference]: With dead ends: 101 [2020-10-24 02:23:18,362 INFO L226 Difference]: Without dead ends: 86 [2020-10-24 02:23:18,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:23:18,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-24 02:23:18,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2020-10-24 02:23:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-24 02:23:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-24 02:23:18,377 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 53 [2020-10-24 02:23:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:23:18,377 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-24 02:23:18,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:23:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-24 02:23:18,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-24 02:23:18,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:18,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:23:18,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 02:23:18,380 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:18,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:18,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1380545564, now seen corresponding path program 1 times [2020-10-24 02:23:18,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:18,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728251151] [2020-10-24 02:23:18,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 02:23:18,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 02:23:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 02:23:18,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 02:23:18,476 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 02:23:18,476 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 02:23:18,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 02:23:18,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:23:18 BoogieIcfgContainer [2020-10-24 02:23:18,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:23:18,545 INFO L168 Benchmark]: Toolchain (without parser) took 3693.55 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.7 MB in the beginning and 92.2 MB in the end (delta: 35.4 MB). Peak memory consumption was 66.6 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:18,546 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:23:18,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.20 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:18,548 INFO L168 Benchmark]: Boogie Preprocessor took 47.92 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:18,549 INFO L168 Benchmark]: RCFGBuilder took 715.40 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 126.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:18,550 INFO L168 Benchmark]: TraceAbstraction took 2669.92 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.0 MB in the beginning and 92.2 MB in the end (delta: 33.8 MB). Peak memory consumption was 65.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:18,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 247.20 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.92 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 715.40 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 126.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2669.92 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.0 MB in the beginning and 92.2 MB in the end (delta: 33.8 MB). Peak memory consumption was 65.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int SIZE; VAL [\old(MAX)=100005, \old(SIZE)=100003, MAX=100005, SIZE=0] [L14] const int MAX = 100000; VAL [\old(MAX)=100005, \old(SIZE)=100003, MAX=100000, SIZE=0] [L18] SIZE = __VERIFIER_nondet_int() VAL [\old(SIZE)=0, __VERIFIER_nondet_int()=2, MAX=100000, SIZE=2] [L19] COND TRUE SIZE > 1 && SIZE < MAX VAL [\old(SIZE)=0, MAX=100000, SIZE=2] [L21] int i; VAL [\old(SIZE)=0, MAX=100000, SIZE=2] [L22] int *a = malloc(sizeof(int)*SIZE); VAL [\old(SIZE)=0, a={-1:0}, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L24] i = 0 VAL [\old(SIZE)=0, a={-1:0}, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L24] COND TRUE i < SIZE VAL [\old(SIZE)=0, a={-1:0}, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L26] a[i] = __VERIFIER_nondet_int() VAL [\old(SIZE)=0, __VERIFIER_nondet_int()=1, a={-1:0}, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L24] i++ VAL [\old(SIZE)=0, a={-1:0}, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L24] COND TRUE i < SIZE VAL [\old(SIZE)=0, a={-1:0}, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L26] a[i] = __VERIFIER_nondet_int() VAL [\old(SIZE)=0, __VERIFIER_nondet_int()=-5, a={-1:0}, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L24] i++ VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L24] COND FALSE !(i < SIZE) VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L29] COND FALSE !(SIZE % 2 != 0) VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L31] CALL assume_abort_if_not(SIZE % 2 == 0) VAL [\old(cond)=1, \old(SIZE)=0, MAX=100000, SIZE=2] [L6] COND FALSE !(!cond) VAL [\old(cond)=1, \old(SIZE)=0, cond=1, MAX=100000, SIZE=2] [L31] RET assume_abort_if_not(SIZE % 2 == 0) VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L32] i = 1 VAL [\old(SIZE)=0, a={-1:0}, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L32] COND TRUE i <= SIZE/2 VAL [\old(SIZE)=0, a={-1:0}, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L34] EXPR a[2*i-2] VAL [\old(SIZE)=0, a={-1:0}, a[2*i-2]=1, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L34] COND FALSE !(a[2*i-2] > i) VAL [\old(SIZE)=0, a={-1:0}, a[2*i-2]=1, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L38] EXPR a[2*i-1] VAL [\old(SIZE)=0, a={-1:0}, a[2*i-1]=-5, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L38] COND FALSE !(a[2*i-1] > i) VAL [\old(SIZE)=0, a={-1:0}, a[2*i-1]=-5, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L32] i++ VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L32] COND FALSE !(i <= SIZE/2) VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L44] i = 0 VAL [\old(SIZE)=0, a={-1:0}, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L44] COND TRUE i < SIZE VAL [\old(SIZE)=0, a={-1:0}, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L46] EXPR a[i] VAL [\old(SIZE)=0, a={-1:0}, a[i]=1, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L46] CALL __VERIFIER_assert( a[i] <= i ) VAL [\old(cond)=0, \old(SIZE)=0, MAX=100000, SIZE=2] [L8] COND TRUE !(cond) VAL [\old(cond)=0, \old(SIZE)=0, cond=0, MAX=100000, SIZE=2] [L8] CALL reach_error() VAL [\old(SIZE)=0, MAX=100000, SIZE=2] [L3] __assert_fail("0", "skippedu.c", 3, "reach_error") VAL [\old(SIZE)=0, MAX=100000, SIZE=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 231 SDtfs, 306 SDslu, 128 SDs, 0 SdLazy, 455 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 20513 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/10 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...