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/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:14:52,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:14:52,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:14:52,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:14:52,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:14:52,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:14:52,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:14:52,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:14:52,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:14:52,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:14:52,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:14:52,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:14:52,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:14:52,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:14:52,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:14:52,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:14:52,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:14:52,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:14:52,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:14:52,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:14:52,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:14:52,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:14:52,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:14:52,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:14:52,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:14:52,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:14:52,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:14:52,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:14:52,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:14:52,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:14:52,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:14:52,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:14:52,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:14:52,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:14:52,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:14:52,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:14:52,306 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 [2019-10-14 23:14:52,320 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:14:52,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:14:52,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:14:52,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:14:52,322 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:14:52,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:14:52,322 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:14:52,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:14:52,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:14:52,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:14:52,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:14:52,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:14:52,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:14:52,324 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:14:52,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:14:52,324 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:14:52,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:14:52,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:14:52,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:14:52,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:14:52,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:14:52,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:14:52,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:14:52,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:14:52,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:14:52,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:14:52,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:14:52,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:14:52,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:14:52,618 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:14:52,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:14:52,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:14:52,636 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:14:52,637 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:14:52,638 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-10-14 23:14:52,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a7392c9/c76342432f404f23bcf1181c9a7ac72e/FLAG4523a4e29 [2019-10-14 23:14:53,181 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:14:53,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-10-14 23:14:53,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a7392c9/c76342432f404f23bcf1181c9a7ac72e/FLAG4523a4e29 [2019-10-14 23:14:53,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a7392c9/c76342432f404f23bcf1181c9a7ac72e [2019-10-14 23:14:53,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:14:53,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:14:53,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:14:53,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:14:53,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:14:53,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:14:53" (1/1) ... [2019-10-14 23:14:53,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363dae01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53, skipping insertion in model container [2019-10-14 23:14:53,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:14:53" (1/1) ... [2019-10-14 23:14:53,567 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:14:53,590 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:14:53,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:14:53,798 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:14:53,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:14:53,841 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:14:53,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53 WrapperNode [2019-10-14 23:14:53,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:14:53,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:14:53,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:14:53,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:14:53,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53" (1/1) ... [2019-10-14 23:14:53,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53" (1/1) ... [2019-10-14 23:14:53,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53" (1/1) ... [2019-10-14 23:14:53,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53" (1/1) ... [2019-10-14 23:14:53,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53" (1/1) ... [2019-10-14 23:14:53,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53" (1/1) ... [2019-10-14 23:14:53,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53" (1/1) ... [2019-10-14 23:14:53,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:14:53,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:14:53,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:14:53,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:14:53,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53" (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 [2019-10-14 23:14:54,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:14:54,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:14:54,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:14:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:14:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:14:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:14:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:14:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:14:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:14:54,233 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:14:54,234 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:14:54,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:14:54 BoogieIcfgContainer [2019-10-14 23:14:54,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:14:54,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:14:54,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:14:54,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:14:54,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:14:53" (1/3) ... [2019-10-14 23:14:54,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d3deef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:14:54, skipping insertion in model container [2019-10-14 23:14:54,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:53" (2/3) ... [2019-10-14 23:14:54,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d3deef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:14:54, skipping insertion in model container [2019-10-14 23:14:54,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:14:54" (3/3) ... [2019-10-14 23:14:54,258 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2019-10-14 23:14:54,279 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:14:54,300 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:14:54,311 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:14:54,338 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:14:54,338 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:14:54,338 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:14:54,338 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:14:54,338 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:14:54,339 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:14:54,339 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:14:54,339 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:14:54,357 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-14 23:14:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-14 23:14:54,362 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:14:54,362 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:14:54,364 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:14:54,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:14:54,368 INFO L82 PathProgramCache]: Analyzing trace with hash 964689295, now seen corresponding path program 1 times [2019-10-14 23:14:54,375 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:14:54,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578907760] [2019-10-14 23:14:54,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:54,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:54,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:14:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:14:54,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578907760] [2019-10-14 23:14:54,604 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:14:54,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:14:54,605 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636490667] [2019-10-14 23:14:54,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:14:54,610 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:14:54,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:14:54,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:14:54,627 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-10-14 23:14:54,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:14:54,775 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2019-10-14 23:14:54,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:14:54,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-14 23:14:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:14:54,789 INFO L225 Difference]: With dead ends: 36 [2019-10-14 23:14:54,789 INFO L226 Difference]: Without dead ends: 20 [2019-10-14 23:14:54,793 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:14:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-14 23:14:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2019-10-14 23:14:54,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-14 23:14:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-10-14 23:14:54,847 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2019-10-14 23:14:54,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:14:54,847 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-10-14 23:14:54,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:14:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-10-14 23:14:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:14:54,849 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:14:54,849 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:14:54,849 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:14:54,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:14:54,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2096975293, now seen corresponding path program 1 times [2019-10-14 23:14:54,850 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:14:54,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719166021] [2019-10-14 23:14:54,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:54,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:54,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:14:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:14:55,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719166021] [2019-10-14 23:14:55,190 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:14:55,191 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:14:55,191 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354382718] [2019-10-14 23:14:55,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:14:55,193 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:14:55,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:14:55,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:14:55,194 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 5 states. [2019-10-14 23:14:55,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:14:55,538 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2019-10-14 23:14:55,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:14:55,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-14 23:14:55,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:14:55,540 INFO L225 Difference]: With dead ends: 29 [2019-10-14 23:14:55,540 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:14:55,541 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:14:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:14:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:14:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:14:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:14:55,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-14 23:14:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:14:55,543 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:14:55,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:14:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:14:55,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:14:55,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:14:55,649 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:14:55,650 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_107~0 |old(~__return_107~0)|)) [2019-10-14 23:14:55,650 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:14:55,650 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:14:55,650 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:14:55,651 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:14:55,651 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:14:55,651 INFO L443 ceAbstractionStarter]: For program point L25(lines 25 47) no Hoare annotation was computed. [2019-10-14 23:14:55,651 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 7 76) no Hoare annotation was computed. [2019-10-14 23:14:55,651 INFO L443 ceAbstractionStarter]: For program point L52(lines 52 74) no Hoare annotation was computed. [2019-10-14 23:14:55,651 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 7 76) no Hoare annotation was computed. [2019-10-14 23:14:55,652 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 7 76) the Hoare annotation is: (= ~__return_107~0 |old(~__return_107~0)|) [2019-10-14 23:14:55,652 INFO L443 ceAbstractionStarter]: For program point L61(line 61) no Hoare annotation was computed. [2019-10-14 23:14:55,652 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) no Hoare annotation was computed. [2019-10-14 23:14:55,652 INFO L443 ceAbstractionStarter]: For program point L59(lines 59 68) no Hoare annotation was computed. [2019-10-14 23:14:55,652 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 48) no Hoare annotation was computed. [2019-10-14 23:14:55,653 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 75) no Hoare annotation was computed. [2019-10-14 23:14:55,653 INFO L439 ceAbstractionStarter]: At program point L45(lines 8 76) the Hoare annotation is: (let ((.cse1 (= ~__return_107~0 |old(~__return_107~0)|))) (or (and (<= (* 2863311531 main_~main__x~0) (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 12297829383904690176 .cse0) (* 8589934592 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)) 1431655765))) .cse1) (and (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0) .cse1))) [2019-10-14 23:14:55,653 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 46) no Hoare annotation was computed. [2019-10-14 23:14:55,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:14:55 BoogieIcfgContainer [2019-10-14 23:14:55,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:14:55,673 INFO L168 Benchmark]: Toolchain (without parser) took 2122.52 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 98.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 66.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:14:55,674 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-14 23:14:55,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.41 ms. Allocated memory is still 137.4 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:14:55,677 INFO L168 Benchmark]: Boogie Preprocessor took 114.39 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 179.0 MB in the end (delta: -86.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:14:55,678 INFO L168 Benchmark]: RCFGBuilder took 279.18 ms. Allocated memory is still 200.3 MB. Free memory was 179.0 MB in the beginning and 166.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:14:55,679 INFO L168 Benchmark]: TraceAbstraction took 1432.23 ms. Allocated memory is still 200.3 MB. Free memory was 166.1 MB in the beginning and 98.8 MB in the end (delta: 67.3 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:14:55,683 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 291.41 ms. Allocated memory is still 137.4 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.39 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 179.0 MB in the end (delta: -86.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.18 ms. Allocated memory is still 200.3 MB. Free memory was 179.0 MB in the beginning and 166.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1432.23 ms. Allocated memory is still 200.3 MB. Free memory was 166.1 MB in the beginning and 98.8 MB in the end (delta: 67.3 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 61]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: (2863311531 * main__x <= 12297829383904690176 * (main__x / 4294967296) + 8589934592 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + 1431655765 && __return_107 == \old(__return_107)) || ((main__y / 4294967296 <= 0 && 1 <= main__y) && __return_107 == \old(__return_107)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 39 SDtfs, 46 SDslu, 22 SDs, 0 SdLazy, 49 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 51 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1505 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...