/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-fpi/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:23:21,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:23:21,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:23:21,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:23:21,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:23:21,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:23:21,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:23:21,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:23:21,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:23:21,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:23:21,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:23:21,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:23:21,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:23:21,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:23:21,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:23:21,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:23:21,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:23:21,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:23:21,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:23:21,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:23:21,355 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 02:23:21,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:23:21,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:23:21,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:23:21,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:23:21,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:23:21,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:23:21,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:23:21,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:23:21,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:23:21,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:23:21,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:23:21,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:23:21,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:23:21,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:23:21,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:23:21,377 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:23:21,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:23:21,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:23:21,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:23:21,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:23:21,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:23:21,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:23:21,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:23:21,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:23:21,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:23:21,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:23:21,771 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:23:21,772 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:23:21,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2020-10-24 02:23:21,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b71d28bf/bb915aac0c1f451a890a40067467d6dc/FLAG1ec8860eb [2020-10-24 02:23:22,470 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:23:22,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c [2020-10-24 02:23:22,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b71d28bf/bb915aac0c1f451a890a40067467d6dc/FLAG1ec8860eb [2020-10-24 02:23:22,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b71d28bf/bb915aac0c1f451a890a40067467d6dc [2020-10-24 02:23:22,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:23:22,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:23:22,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:23:22,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:23:22,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:23:22,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:22" (1/1) ... [2020-10-24 02:23:22,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62043c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:22, skipping insertion in model container [2020-10-24 02:23:22,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:22" (1/1) ... [2020-10-24 02:23:22,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:23:22,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:23:23,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:23:23,133 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:23:23,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:23:23,172 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:23:23,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:23 WrapperNode [2020-10-24 02:23:23,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:23:23,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:23:23,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:23:23,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:23:23,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:23" (1/1) ... [2020-10-24 02:23:23,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:23" (1/1) ... [2020-10-24 02:23:23,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:23" (1/1) ... [2020-10-24 02:23:23,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:23" (1/1) ... [2020-10-24 02:23:23,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:23" (1/1) ... [2020-10-24 02:23:23,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:23" (1/1) ... [2020-10-24 02:23:23,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:23" (1/1) ... [2020-10-24 02:23:23,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:23:23,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:23:23,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:23:23,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:23:23,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:23" (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 02:23:23,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:23:23,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:23:23,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:23:23,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:23:23,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:23:23,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:23:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:23:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:23:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:23:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:23:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:23:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:23:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:23:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 02:23:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:23:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 02:23:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:23:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:23:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:23:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:23:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:23:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:23:23,718 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:23:23,719 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-24 02:23:23,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:23 BoogieIcfgContainer [2020-10-24 02:23:23,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:23:23,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:23:23,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:23:23,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:23:23,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:23:22" (1/3) ... [2020-10-24 02:23:23,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14be6657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:23, skipping insertion in model container [2020-10-24 02:23:23,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:23" (2/3) ... [2020-10-24 02:23:23,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14be6657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:23, skipping insertion in model container [2020-10-24 02:23:23,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:23" (3/3) ... [2020-10-24 02:23:23,729 INFO L111 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-10-24 02:23:23,741 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:23:23,747 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:23:23,760 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:23:23,783 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:23:23,783 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:23:23,783 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:23:23,783 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:23:23,783 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:23:23,783 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:23:23,784 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:23:23,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:23:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-24 02:23:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-24 02:23:23,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:23,809 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] [2020-10-24 02:23:23,809 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:23,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1808678520, now seen corresponding path program 1 times [2020-10-24 02:23:23,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:23,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193333920] [2020-10-24 02:23:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:24,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:23:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:24,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-24 02:23:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:24,171 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 02:23:24,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193333920] [2020-10-24 02:23:24,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:23:24,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 02:23:24,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634903733] [2020-10-24 02:23:24,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 02:23:24,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:23:24,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 02:23:24,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:23:24,201 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-10-24 02:23:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:23:24,399 INFO L93 Difference]: Finished difference Result 111 states and 129 transitions. [2020-10-24 02:23:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 02:23:24,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-24 02:23:24,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:23:24,411 INFO L225 Difference]: With dead ends: 111 [2020-10-24 02:23:24,411 INFO L226 Difference]: Without dead ends: 58 [2020-10-24 02:23:24,416 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 02:23:24,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-24 02:23:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-24 02:23:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-24 02:23:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-24 02:23:24,472 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 37 [2020-10-24 02:23:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:23:24,472 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-24 02:23:24,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 02:23:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-24 02:23:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-24 02:23:24,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:24,475 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] [2020-10-24 02:23:24,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:23:24,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:24,477 INFO L82 PathProgramCache]: Analyzing trace with hash 783267996, now seen corresponding path program 1 times [2020-10-24 02:23:24,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:24,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334819639] [2020-10-24 02:23:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:23:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:24,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-24 02:23:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:24,694 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 02:23:24,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334819639] [2020-10-24 02:23:24,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:23:24,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 02:23:24,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317825098] [2020-10-24 02:23:24,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:23:24,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:23:24,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:23:24,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:23:24,704 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 5 states. [2020-10-24 02:23:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:23:25,081 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-10-24 02:23:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:23:25,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-24 02:23:25,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:23:25,088 INFO L225 Difference]: With dead ends: 105 [2020-10-24 02:23:25,089 INFO L226 Difference]: Without dead ends: 78 [2020-10-24 02:23:25,090 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 [2020-10-24 02:23:25,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-24 02:23:25,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2020-10-24 02:23:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-24 02:23:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-24 02:23:25,113 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 37 [2020-10-24 02:23:25,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:23:25,114 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-24 02:23:25,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:23:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-24 02:23:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-24 02:23:25,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:25,116 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, 1, 1, 1, 1] [2020-10-24 02:23:25,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:23:25,117 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:25,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:25,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1722760403, now seen corresponding path program 1 times [2020-10-24 02:23:25,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:25,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753319699] [2020-10-24 02:23:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 02:23:25,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 02:23:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 02:23:25,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 02:23:25,325 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 02:23:25,325 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 02:23:25,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:23:25,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:23:25 BoogieIcfgContainer [2020-10-24 02:23:25,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:23:25,385 INFO L168 Benchmark]: Toolchain (without parser) took 2521.01 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 126.2 MB in the beginning and 125.5 MB in the end (delta: 733.7 kB). Peak memory consumption was 37.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:25,385 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:23:25,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:25,387 INFO L168 Benchmark]: Boogie Preprocessor took 41.62 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:25,388 INFO L168 Benchmark]: RCFGBuilder took 504.69 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 131.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:25,390 INFO L168 Benchmark]: TraceAbstraction took 1659.38 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 131.1 MB in the beginning and 126.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 41.2 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:25,394 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 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.62 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 504.69 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 131.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1659.38 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 131.1 MB in the beginning and 126.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 41.2 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() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [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; VAL [\old(N)=0, N=1] [L28] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] COND TRUE i < N VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L32] a[i] = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] COND FALSE !(i < N) VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] COND TRUE i < N VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L37] COND TRUE N%2 == 1 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L39] EXPR a[i] VAL [\old(N)=0, a={-1:0}, a[i]=0, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L39] a[i] = a[i] + 2 VAL [\old(N)=0, a={-1:0}, a[i]=0, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] COND FALSE !(i < N) VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L47] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L47] COND TRUE i < N VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L49] EXPR a[i] VAL [\old(N)=0, a={-1:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L49] CALL __VERIFIER_assert(a[i] % 2 == N % 2) 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", "condmf.c", 10, "reach_error") VAL [\old(N)=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 94 SDslu, 28 SDs, 0 SdLazy, 152 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 5544 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...