/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:32:00,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:32:00,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:32:00,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:32:00,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:32:00,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:32:00,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:32:00,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:32:00,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:32:00,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:32:00,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:32:00,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:32:00,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:32:00,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:32:00,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:32:00,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:32:00,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:32:00,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:32:00,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:32:00,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:32:00,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:32:00,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:32:00,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:32:00,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:32:00,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:32:00,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:32:00,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:32:00,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:32:00,230 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 [2020-07-07 11:32:00,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:32:00,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:32:00,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:32:00,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:32:00,245 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:32:00,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:32:00,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:32:00,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:32:00,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:32:00,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:32:00,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:32:00,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:32:00,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:32:00,247 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:32:00,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:32:00,247 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:32:00,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:32:00,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:32:00,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:32:00,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:32:00,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:32:00,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:32:00,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:32:00,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:32:00,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:32:00,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:32:00,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:32:00,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:32:00,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:32:00,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:32:00,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:32:00,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:32:00,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:32:00,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:32:00,609 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:32:00,610 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2020-07-07 11:32:00,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dccbf15a/84df674262514298a3a2e8a640230950/FLAG33102c903 [2020-07-07 11:32:01,121 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:32:01,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2020-07-07 11:32:01,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dccbf15a/84df674262514298a3a2e8a640230950/FLAG33102c903 [2020-07-07 11:32:01,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dccbf15a/84df674262514298a3a2e8a640230950 [2020-07-07 11:32:01,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:32:01,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:32:01,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:01,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:32:01,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:32:01,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:01" (1/1) ... [2020-07-07 11:32:01,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189d00ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01, skipping insertion in model container [2020-07-07 11:32:01,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:01" (1/1) ... [2020-07-07 11:32:01,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:32:01,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:32:01,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:01,735 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:32:01,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:01,779 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:32:01,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01 WrapperNode [2020-07-07 11:32:01,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:01,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:32:01,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:32:01,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:32:01,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01" (1/1) ... [2020-07-07 11:32:01,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01" (1/1) ... [2020-07-07 11:32:01,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01" (1/1) ... [2020-07-07 11:32:01,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01" (1/1) ... [2020-07-07 11:32:01,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01" (1/1) ... [2020-07-07 11:32:01,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01" (1/1) ... [2020-07-07 11:32:01,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01" (1/1) ... [2020-07-07 11:32:01,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:32:01,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:32:01,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:32:01,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:32:01,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01" (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 [2020-07-07 11:32:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:32:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:32:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:32:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:32:01,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:32:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:32:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:32:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:32:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:32:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:32:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:32:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:32:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:32:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:32:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:32:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:32:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:32:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:32:02,268 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:32:02,268 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-07 11:32:02,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:02 BoogieIcfgContainer [2020-07-07 11:32:02,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:32:02,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:32:02,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:32:02,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:32:02,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:32:01" (1/3) ... [2020-07-07 11:32:02,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492ca93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:02, skipping insertion in model container [2020-07-07 11:32:02,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:01" (2/3) ... [2020-07-07 11:32:02,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492ca93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:02, skipping insertion in model container [2020-07-07 11:32:02,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:02" (3/3) ... [2020-07-07 11:32:02,282 INFO L109 eAbstractionObserver]: Analyzing ICFG indp2f.c [2020-07-07 11:32:02,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:32:02,314 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:32:02,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:32:02,366 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:32:02,366 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:32:02,366 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:32:02,366 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:32:02,366 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:32:02,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:32:02,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:32:02,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:32:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-07 11:32:02,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:32:02,389 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:02,389 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] [2020-07-07 11:32:02,390 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-07-07 11:32:02,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:02,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418692567] [2020-07-07 11:32:02,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:02,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418692567] [2020-07-07 11:32:02,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:02,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:32:02,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566604118] [2020-07-07 11:32:02,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:32:02,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:02,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:32:02,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:02,637 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-07 11:32:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:02,748 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-07 11:32:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:32:02,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-07 11:32:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:02,759 INFO L225 Difference]: With dead ends: 64 [2020-07-07 11:32:02,759 INFO L226 Difference]: Without dead ends: 32 [2020-07-07 11:32:02,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-07 11:32:02,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-07 11:32:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 11:32:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-07 11:32:02,804 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-07-07 11:32:02,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:02,804 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-07 11:32:02,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:32:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-07 11:32:02,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:32:02,806 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:02,806 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] [2020-07-07 11:32:02,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:32:02,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:02,808 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-07-07 11:32:02,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:02,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790860433] [2020-07-07 11:32:02,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:02,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790860433] [2020-07-07 11:32:02,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:02,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:32:02,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694537048] [2020-07-07 11:32:02,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:32:02,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:02,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:32:02,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:32:02,929 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-07-07 11:32:03,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:03,069 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-07-07 11:32:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:32:03,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-07-07 11:32:03,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:03,073 INFO L225 Difference]: With dead ends: 59 [2020-07-07 11:32:03,073 INFO L226 Difference]: Without dead ends: 42 [2020-07-07 11:32:03,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:32:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-07 11:32:03,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-07-07 11:32:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-07 11:32:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-07-07 11:32:03,088 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-07-07 11:32:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:03,089 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-07-07 11:32:03,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:32:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-07-07 11:32:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-07 11:32:03,090 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:03,090 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] [2020-07-07 11:32:03,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:32:03,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:03,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:03,092 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-07-07 11:32:03,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:03,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79777521] [2020-07-07 11:32:03,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:03,112 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:32:03,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268738844] [2020-07-07 11:32:03,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:03,263 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:32:03,266 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:32:03,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 11:32:03,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:32:03 BoogieIcfgContainer [2020-07-07 11:32:03,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:32:03,519 INFO L168 Benchmark]: Toolchain (without parser) took 2010.22 ms. Allocated memory was 146.8 MB in the beginning and 233.3 MB in the end (delta: 86.5 MB). Free memory was 105.1 MB in the beginning and 203.5 MB in the end (delta: -98.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:03,521 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:32:03,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.58 ms. Allocated memory is still 146.8 MB. Free memory was 104.9 MB in the beginning and 94.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:03,523 INFO L168 Benchmark]: Boogie Preprocessor took 130.77 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 94.4 MB in the beginning and 179.9 MB in the end (delta: -85.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:03,524 INFO L168 Benchmark]: RCFGBuilder took 361.24 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 162.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:03,525 INFO L168 Benchmark]: TraceAbstraction took 1242.20 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 162.2 MB in the beginning and 203.5 MB in the end (delta: -41.4 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:03,529 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.58 ms. Allocated memory is still 146.8 MB. Free memory was 104.9 MB in the beginning and 94.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.77 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 94.4 MB in the beginning and 179.9 MB in the end (delta: -85.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.24 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 162.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1242.20 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 162.2 MB in the beginning and 203.5 MB in the end (delta: -41.4 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=2, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L28] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1] [L28] COND TRUE i