/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:13:01,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:13:01,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:13:01,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:13:01,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:13:01,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:13:01,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:13:01,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:13:01,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:13:01,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:13:01,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:13:01,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:13:01,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:13:01,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:13:01,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:13:01,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:13:01,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:13:01,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:13:01,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:13:01,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:13:01,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:13:01,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:13:01,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:13:01,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:13:01,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:13:01,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:13:01,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:13:01,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:13:01,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:13:01,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:13:01,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:13:01,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:13:01,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:13:01,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:13:01,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:13:01,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:13:01,829 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:13:01,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:13:01,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:13:01,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:13:01,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:13:01,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:13:01,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:13:01,835 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 23:13:02,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:13:02,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:13:02,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:13:02,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:13:02,198 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:13:02,200 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-08-22 23:13:02,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77a9357a6/3db00ee15a47421db1f8a56a8f05bee3/FLAG9cd2bee75 [2020-08-22 23:13:02,975 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:13:02,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-08-22 23:13:02,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77a9357a6/3db00ee15a47421db1f8a56a8f05bee3/FLAG9cd2bee75 [2020-08-22 23:13:03,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77a9357a6/3db00ee15a47421db1f8a56a8f05bee3 [2020-08-22 23:13:03,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:13:03,323 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:13:03,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:13:03,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:13:03,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:13:03,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:13:03" (1/1) ... [2020-08-22 23:13:03,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c7438f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03, skipping insertion in model container [2020-08-22 23:13:03,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:13:03" (1/1) ... [2020-08-22 23:13:03,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:13:03,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:13:03,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:13:03,603 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:13:03,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:13:03,651 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:13:03,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03 WrapperNode [2020-08-22 23:13:03,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:13:03,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:13:03,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:13:03,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:13:03,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03" (1/1) ... [2020-08-22 23:13:03,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03" (1/1) ... [2020-08-22 23:13:03,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03" (1/1) ... [2020-08-22 23:13:03,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03" (1/1) ... [2020-08-22 23:13:03,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03" (1/1) ... [2020-08-22 23:13:03,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03" (1/1) ... [2020-08-22 23:13:03,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03" (1/1) ... [2020-08-22 23:13:03,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:13:03,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:13:03,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:13:03,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:13:03,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03" (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 [2020-08-22 23:13:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:13:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:13:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:13:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:13:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:13:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:13:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:13:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:13:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:13:04,214 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:13:04,215 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 23:13:04,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:13:04 BoogieIcfgContainer [2020-08-22 23:13:04,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:13:04,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:13:04,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:13:04,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:13:04,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:13:03" (1/3) ... [2020-08-22 23:13:04,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b2d27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:13:04, skipping insertion in model container [2020-08-22 23:13:04,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:13:03" (2/3) ... [2020-08-22 23:13:04,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b2d27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:13:04, skipping insertion in model container [2020-08-22 23:13:04,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:13:04" (3/3) ... [2020-08-22 23:13:04,271 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2020-08-22 23:13:04,290 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:13:04,318 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:13:04,360 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:13:04,390 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:13:04,391 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:13:04,391 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:13:04,391 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:13:04,391 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:13:04,391 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:13:04,392 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:13:04,392 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:13:04,428 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-22 23:13:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 23:13:04,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:13:04,448 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] [2020-08-22 23:13:04,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:13:04,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:13:04,456 INFO L82 PathProgramCache]: Analyzing trace with hash -869872181, now seen corresponding path program 1 times [2020-08-22 23:13:04,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:13:04,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851223477] [2020-08-22 23:13:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:13:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:04,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:13:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:13:04,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851223477] [2020-08-22 23:13:04,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:13:04,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 23:13:04,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205656177] [2020-08-22 23:13:04,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 23:13:04,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:13:04,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 23:13:04,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 23:13:04,836 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-22 23:13:05,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:13:05,193 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-08-22 23:13:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 23:13:05,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-08-22 23:13:05,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:13:05,217 INFO L225 Difference]: With dead ends: 83 [2020-08-22 23:13:05,217 INFO L226 Difference]: Without dead ends: 56 [2020-08-22 23:13:05,223 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 [2020-08-22 23:13:05,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-22 23:13:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 41. [2020-08-22 23:13:05,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 23:13:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-08-22 23:13:05,309 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 20 [2020-08-22 23:13:05,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:13:05,311 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-08-22 23:13:05,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 23:13:05,311 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-08-22 23:13:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 23:13:05,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:13:05,314 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] [2020-08-22 23:13:05,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:13:05,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:13:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:13:05,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1638922607, now seen corresponding path program 1 times [2020-08-22 23:13:05,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:13:05,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628105364] [2020-08-22 23:13:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:13:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:05,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:13:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:13:05,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628105364] [2020-08-22 23:13:05,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:13:05,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 23:13:05,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077211794] [2020-08-22 23:13:05,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 23:13:05,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:13:05,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 23:13:05,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 23:13:05,826 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 7 states. [2020-08-22 23:13:08,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:13:08,713 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-08-22 23:13:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 23:13:08,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-08-22 23:13:08,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:13:08,716 INFO L225 Difference]: With dead ends: 94 [2020-08-22 23:13:08,717 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 23:13:08,719 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 [2020-08-22 23:13:08,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 23:13:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-08-22 23:13:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 23:13:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-08-22 23:13:08,739 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 28 [2020-08-22 23:13:08,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:13:08,740 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-08-22 23:13:08,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 23:13:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-08-22 23:13:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 23:13:08,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:13:08,743 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] [2020-08-22 23:13:08,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:13:08,744 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:13:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:13:08,744 INFO L82 PathProgramCache]: Analyzing trace with hash -850084426, now seen corresponding path program 1 times [2020-08-22 23:13:08,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:13:08,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670279943] [2020-08-22 23:13:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:13:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:09,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:13:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:13:09,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670279943] [2020-08-22 23:13:09,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:13:09,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 23:13:09,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652864878] [2020-08-22 23:13:09,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 23:13:09,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:13:09,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 23:13:09,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 23:13:09,347 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 7 states. [2020-08-22 23:13:12,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:13:12,086 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-08-22 23:13:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 23:13:12,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-08-22 23:13:12,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:13:12,088 INFO L225 Difference]: With dead ends: 95 [2020-08-22 23:13:12,088 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:13:12,090 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 [2020-08-22 23:13:12,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:13:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:13:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:13:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:13:12,092 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-08-22 23:13:12,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:13:12,093 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:13:12,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 23:13:12,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:13:12,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:13:12,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:13:12,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:13:13,178 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:13:13,179 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)|)) [2020-08-22 23:13:13,179 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-08-22 23:13:13,179 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:13:13,179 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:13:13,179 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:13:13,180 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:13:13,180 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:13:13,180 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)) [2020-08-22 23:13:13,180 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 7 76) the Hoare annotation is: true [2020-08-22 23:13:13,181 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)))))))) [2020-08-22 23:13:13,181 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)))))))))) [2020-08-22 23:13:13,182 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)))))))) [2020-08-22 23:13:13,182 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,182 INFO L264 CegarLoopResult]: At program point L73(line 73) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,182 INFO L264 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: false [2020-08-22 23:13:13,183 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)))))))) [2020-08-22 23:13:13,183 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)))))))) [2020-08-22 23:13:13,183 INFO L264 CegarLoopResult]: At program point L16(lines 16 48) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,184 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)))))))))) [2020-08-22 23:13:13,184 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,184 INFO L264 CegarLoopResult]: At program point L66(line 66) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,184 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,185 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: false [2020-08-22 23:13:13,185 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)))))))) [2020-08-22 23:13:13,185 INFO L264 CegarLoopResult]: At program point L25(lines 25 47) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,185 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)))))))))) [2020-08-22 23:13:13,186 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 7 76) the Hoare annotation is: true [2020-08-22 23:13:13,186 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)))))))))) [2020-08-22 23:13:13,186 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)))))))))) [2020-08-22 23:13:13,186 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,187 INFO L271 CegarLoopResult]: At program point L67(line 67) the Hoare annotation is: true [2020-08-22 23:13:13,187 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,187 INFO L264 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,187 INFO L264 CegarLoopResult]: At program point L34-2(line 34) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,187 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) the Hoare annotation is: false [2020-08-22 23:13:13,188 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 7 76) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,188 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)))))))) [2020-08-22 23:13:13,188 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)))))))) [2020-08-22 23:13:13,189 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))))))) [2020-08-22 23:13:13,189 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)))))))))) [2020-08-22 23:13:13,189 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,189 INFO L264 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,189 INFO L264 CegarLoopResult]: At program point L35(lines 35 46) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-08-22 23:13:13,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:13:13 BoogieIcfgContainer [2020-08-22 23:13:13,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:13:13,248 INFO L168 Benchmark]: Toolchain (without parser) took 9922.79 ms. Allocated memory was 139.5 MB in the beginning and 245.4 MB in the end (delta: 105.9 MB). Free memory was 102.8 MB in the beginning and 171.1 MB in the end (delta: -68.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 7.1 GB. [2020-08-22 23:13:13,249 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:13:13,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.83 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:13:13,251 INFO L168 Benchmark]: Boogie Preprocessor took 151.73 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 92.8 MB in the beginning and 183.2 MB in the end (delta: -90.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-22 23:13:13,255 INFO L168 Benchmark]: RCFGBuilder took 424.22 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 168.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:13:13,260 INFO L168 Benchmark]: TraceAbstraction took 8995.01 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 168.8 MB in the beginning and 171.1 MB in the end (delta: -2.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2020-08-22 23:13:13,270 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.83 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.73 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 92.8 MB in the beginning and 183.2 MB in the end (delta: -90.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.22 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 168.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8995.01 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 168.8 MB in the beginning and 171.1 MB in the end (delta: -2.3 MB). Peak memory consumption was 116.3 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: ((\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: 7.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 176 SDslu, 64 SDs, 0 SdLazy, 393 SolverSat, 13 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s 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, 0.1s HoareSimplificationTime, 44 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 26995 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...