/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:50:19,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:50:19,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:50:19,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:50:19,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:50:19,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:50:19,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:50:19,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:50:19,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:50:19,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:50:19,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:50:19,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:50:19,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:50:19,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:50:19,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:50:19,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:50:19,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:50:19,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:50:19,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:50:19,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:50:19,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:50:19,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:50:19,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:50:19,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:50:19,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:50:19,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:50:19,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:50:19,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:50:19,819 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:50:19,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:50:19,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:50:19,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:50:19,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:50:19,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:50:19,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:50:19,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:50:19,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:50:19,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:50:19,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:50:19,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:50:19,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:50:19,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:50:19,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:50:19,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:50:19,840 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:50:19,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:50:19,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:50:19,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:50:19,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:50:19,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:50:19,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:50:19,841 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:50:20,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:50:20,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:50:20,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:50:20,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:50:20,357 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:50:20,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-09-04 17:50:20,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64790aedd/c28844f7387040389b48f4cf3baad658/FLAG7da5378de [2020-09-04 17:50:21,121 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:50:21,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-09-04 17:50:21,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64790aedd/c28844f7387040389b48f4cf3baad658/FLAG7da5378de [2020-09-04 17:50:21,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64790aedd/c28844f7387040389b48f4cf3baad658 [2020-09-04 17:50:21,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:50:21,463 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:50:21,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:50:21,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:50:21,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:50:21,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:50:21" (1/1) ... [2020-09-04 17:50:21,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21, skipping insertion in model container [2020-09-04 17:50:21,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:50:21" (1/1) ... [2020-09-04 17:50:21,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:50:21,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:50:21,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:50:21,814 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:50:21,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:50:21,862 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:50:21,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21 WrapperNode [2020-09-04 17:50:21,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:50:21,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:50:21,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:50:21,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:50:21,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21" (1/1) ... [2020-09-04 17:50:21,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21" (1/1) ... [2020-09-04 17:50:21,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21" (1/1) ... [2020-09-04 17:50:21,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21" (1/1) ... [2020-09-04 17:50:21,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21" (1/1) ... [2020-09-04 17:50:22,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21" (1/1) ... [2020-09-04 17:50:22,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21" (1/1) ... [2020-09-04 17:50:22,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:50:22,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:50:22,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:50:22,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:50:22,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:50:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:50:22,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:50:22,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:50:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:50:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:50:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:50:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:50:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:50:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:50:22,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:50:22,409 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 17:50:22,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:50:22 BoogieIcfgContainer [2020-09-04 17:50:22,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:50:22,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:50:22,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:50:22,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:50:22,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:50:21" (1/3) ... [2020-09-04 17:50:22,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366423ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:50:22, skipping insertion in model container [2020-09-04 17:50:22,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:50:21" (2/3) ... [2020-09-04 17:50:22,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366423ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:50:22, skipping insertion in model container [2020-09-04 17:50:22,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:50:22" (3/3) ... [2020-09-04 17:50:22,435 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2020-09-04 17:50:22,457 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:50:22,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:50:22,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:50:22,583 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:50:22,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:50:22,584 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:50:22,586 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:50:22,586 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:50:22,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:50:22,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:50:22,587 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:50:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-04 17:50:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 17:50:22,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:22,638 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] [2020-09-04 17:50:22,639 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:22,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:22,648 INFO L82 PathProgramCache]: Analyzing trace with hash -869872181, now seen corresponding path program 1 times [2020-09-04 17:50:22,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:22,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433765581] [2020-09-04 17:50:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:22,752 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:22,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:23,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433765581] [2020-09-04 17:50:23,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:23,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 17:50:23,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289204490] [2020-09-04 17:50:23,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 17:50:23,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:23,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 17:50:23,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 17:50:23,047 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-09-04 17:50:23,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:23,348 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-09-04 17:50:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 17:50:23,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-04 17:50:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:23,371 INFO L225 Difference]: With dead ends: 83 [2020-09-04 17:50:23,371 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 17:50:23,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:50:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 17:50:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 41. [2020-09-04 17:50:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-04 17:50:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-09-04 17:50:23,456 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 20 [2020-09-04 17:50:23,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:23,457 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-09-04 17:50:23,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 17:50:23,457 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-09-04 17:50:23,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 17:50:23,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:23,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:23,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:50:23,460 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:23,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1638922607, now seen corresponding path program 1 times [2020-09-04 17:50:23,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:23,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698184616] [2020-09-04 17:50:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:23,495 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:23,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:24,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698184616] [2020-09-04 17:50:24,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:24,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:50:24,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641246076] [2020-09-04 17:50:24,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:50:24,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:24,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:50:24,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:50:24,007 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 7 states. [2020-09-04 17:50:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:35,131 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-09-04 17:50:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 17:50:35,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-04 17:50:35,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:35,136 INFO L225 Difference]: With dead ends: 94 [2020-09-04 17:50:35,136 INFO L226 Difference]: Without dead ends: 55 [2020-09-04 17:50:35,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:50:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-04 17:50:35,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-09-04 17:50:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-04 17:50:35,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-09-04 17:50:35,157 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 28 [2020-09-04 17:50:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:35,158 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-09-04 17:50:35,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:50:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-09-04 17:50:35,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 17:50:35,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:35,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:35,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:50:35,161 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:35,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:35,161 INFO L82 PathProgramCache]: Analyzing trace with hash -850084426, now seen corresponding path program 1 times [2020-09-04 17:50:35,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:35,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554738715] [2020-09-04 17:50:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:35,178 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:35,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554738715] [2020-09-04 17:50:35,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:35,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:50:35,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98409920] [2020-09-04 17:50:35,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:50:35,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:35,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:50:35,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:50:35,675 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 7 states. [2020-09-04 17:50:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:40,416 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-09-04 17:50:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 17:50:40,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-09-04 17:50:40,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:40,418 INFO L225 Difference]: With dead ends: 95 [2020-09-04 17:50:40,418 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 17:50:40,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:50:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 17:50:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 17:50:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 17:50:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 17:50:40,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-09-04 17:50:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:40,427 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 17:50:40,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:50:40,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 17:50:40,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 17:50:40,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:50:40,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 17:50:41,484 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:50:41,485 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_107~0 |old(~__return_107~0)|) (= ~__return_main~0 |old(~__return_main~0)|)) [2020-09-04 17:50:41,485 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-04 17:50:41,485 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:50:41,485 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:50:41,485 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 17:50:41,486 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 17:50:41,486 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:50:41,486 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)) 2)))) main_~main__x~0)) [2020-09-04 17:50:41,486 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 7 76) the Hoare annotation is: true [2020-09-04 17:50:41,487 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 17:50:41,487 INFO L264 CegarLoopResult]: At program point L52(lines 52 74) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 17:50:41,487 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 17:50:41,487 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,488 INFO L264 CegarLoopResult]: At program point L73(line 73) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,488 INFO L264 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: false [2020-09-04 17:50:41,488 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 17:50:41,488 INFO L264 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 17:50:41,488 INFO L264 CegarLoopResult]: At program point L16(lines 16 48) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,489 INFO L264 CegarLoopResult]: At program point L45(lines 8 76) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 17:50:41,489 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,489 INFO L264 CegarLoopResult]: At program point L66(line 66) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,489 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,489 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: false [2020-09-04 17:50:41,490 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 17:50:41,490 INFO L264 CegarLoopResult]: At program point L25(lines 25 47) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,490 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 17:50:41,490 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 7 76) the Hoare annotation is: true [2020-09-04 17:50:41,491 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 17:50:41,491 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 17:50:41,491 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,491 INFO L271 CegarLoopResult]: At program point L67(line 67) the Hoare annotation is: true [2020-09-04 17:50:41,492 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,492 INFO L264 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,492 INFO L264 CegarLoopResult]: At program point L34-2(line 34) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,492 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) the Hoare annotation is: false [2020-09-04 17:50:41,492 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 7 76) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,493 INFO L264 CegarLoopResult]: At program point L59(lines 59 68) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 17:50:41,493 INFO L264 CegarLoopResult]: At program point L55(line 55) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 17:50:41,493 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse3 main_~main__x~0) 3))) (let ((.cse2 (div (+ .cse3 (* .cse1 (- 3)) main_~main__x~0) 4294967296))) (and (= |old(~__return_107~0)| ~__return_107~0) (<= (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 .cse2) 1) main_~main__x~0) (<= (* 1431655765 main_~main__x~0) (+ (* 6148914689804861440 .cse0) (* 4294967296 .cse1) (* 6148914689804861440 .cse2) 1431655765))))))) [2020-09-04 17:50:41,494 INFO L264 CegarLoopResult]: At program point L14(lines 14 75) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 17:50:41,494 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,494 INFO L264 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,494 INFO L264 CegarLoopResult]: At program point L35(lines 35 46) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 17:50:41,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:50:41 BoogieIcfgContainer [2020-09-04 17:50:41,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:50:41,533 INFO L168 Benchmark]: Toolchain (without parser) took 20068.61 ms. Allocated memory was 138.9 MB in the beginning and 244.3 MB in the end (delta: 105.4 MB). Free memory was 103.6 MB in the beginning and 164.6 MB in the end (delta: -61.1 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:50:41,534 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:50:41,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.74 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 93.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:50:41,536 INFO L168 Benchmark]: Boogie Preprocessor took 143.83 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 93.1 MB in the beginning and 183.1 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:50:41,537 INFO L168 Benchmark]: RCFGBuilder took 412.22 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 168.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:50:41,539 INFO L168 Benchmark]: TraceAbstraction took 19106.13 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 167.7 MB in the beginning and 164.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 115.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:50:41,543 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 398.74 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 93.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.83 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 93.1 MB in the beginning and 183.1 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.22 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 168.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19106.13 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 167.7 MB in the beginning and 164.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 115.5 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: ((\old(__return_107) == __return_107 && main__y / 4294967296 <= 0) && 1 <= main__y) || (\old(__return_107) == __return_107 && main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + 4294967296 * ((main__x / 4294967296 * -4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * -3 + main__x) / 4294967296)) - ProcedureContractResult [Line: 7]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 176 SDslu, 64 SDs, 0 SdLazy, 388 SolverSat, 13 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=2, 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, 3 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 44 PreInvPairs, 96 NumberOfFragments, 880 HoareAnnotationTreeSize, 44 FomulaSimplifications, 2115 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 44 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 correct! Received shutdown request...