/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/recursive-simple/id_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:10:06,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:10:06,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:10:06,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:10:06,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:10:06,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:10:06,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:10:06,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:10:06,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:10:06,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:10:06,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:10:06,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:10:06,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:10:06,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:10:06,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:10:06,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:10:06,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:10:06,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:10:06,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:10:06,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:10:06,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:10:06,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:10:06,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:10:06,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:10:06,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:10:06,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:10:06,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:10:06,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:10:06,718 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 22:10:06,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:10:06,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:10:06,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:10:06,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:10:06,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:10:06,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:10:06,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:10:06,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:10:06,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:10:06,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:10:06,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:10:06,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:10:06,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:10:06,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:10:06,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:10:06,738 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:10:06,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:10:06,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:10:06,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:10:06,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:10:06,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:10:06,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:10:06,739 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 22:10:07,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:10:07,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:10:07,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:10:07,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:10:07,040 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:10:07,040 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b2_o3.c [2020-08-22 22:10:07,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553735ebd/b9e776898fca4a87bb4e14f01d3e4d7b/FLAG411cedae8 [2020-08-22 22:10:07,573 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:10:07,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b2_o3.c [2020-08-22 22:10:07,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553735ebd/b9e776898fca4a87bb4e14f01d3e4d7b/FLAG411cedae8 [2020-08-22 22:10:07,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553735ebd/b9e776898fca4a87bb4e14f01d3e4d7b [2020-08-22 22:10:08,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:10:08,003 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:10:08,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:10:08,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:10:08,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:10:08,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:10:07" (1/1) ... [2020-08-22 22:10:08,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac4b67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08, skipping insertion in model container [2020-08-22 22:10:08,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:10:07" (1/1) ... [2020-08-22 22:10:08,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:10:08,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:10:08,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:10:08,255 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:10:08,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:10:08,280 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:10:08,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08 WrapperNode [2020-08-22 22:10:08,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:10:08,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:10:08,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:10:08,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:10:08,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08" (1/1) ... [2020-08-22 22:10:08,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08" (1/1) ... [2020-08-22 22:10:08,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08" (1/1) ... [2020-08-22 22:10:08,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08" (1/1) ... [2020-08-22 22:10:08,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08" (1/1) ... [2020-08-22 22:10:08,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08" (1/1) ... [2020-08-22 22:10:08,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08" (1/1) ... [2020-08-22 22:10:08,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:10:08,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:10:08,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:10:08,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:10:08,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08" (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 22:10:08,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:10:08,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:10:08,460 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-22 22:10:08,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:10:08,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 22:10:08,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:10:08,460 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-22 22:10:08,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:10:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:10:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:10:08,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:10:08,658 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 22:10:08,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:10:08 BoogieIcfgContainer [2020-08-22 22:10:08,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:10:08,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:10:08,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:10:08,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:10:08,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:10:07" (1/3) ... [2020-08-22 22:10:08,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696f6db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:10:08, skipping insertion in model container [2020-08-22 22:10:08,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:08" (2/3) ... [2020-08-22 22:10:08,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696f6db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:10:08, skipping insertion in model container [2020-08-22 22:10:08,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:10:08" (3/3) ... [2020-08-22 22:10:08,703 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b2_o3.c [2020-08-22 22:10:08,733 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:10:08,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:10:08,773 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:10:08,797 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:10:08,798 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:10:08,798 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:10:08,798 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:10:08,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:10:08,798 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:10:08,799 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:10:08,799 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:10:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-08-22 22:10:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 22:10:08,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:08,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:08,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:08,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:08,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1920796714, now seen corresponding path program 1 times [2020-08-22 22:10:08,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:08,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430898292] [2020-08-22 22:10:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:10:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:09,159 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 22:10:09,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430898292] [2020-08-22 22:10:09,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:10:09,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:10:09,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721874538] [2020-08-22 22:10:09,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:10:09,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:09,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:10:09,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:10:09,187 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-08-22 22:10:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:09,282 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-08-22 22:10:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:10:09,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 22:10:09,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:09,296 INFO L225 Difference]: With dead ends: 40 [2020-08-22 22:10:09,297 INFO L226 Difference]: Without dead ends: 25 [2020-08-22 22:10:09,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:10:09,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-22 22:10:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-22 22:10:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 22:10:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-22 22:10:09,349 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2020-08-22 22:10:09,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:09,350 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-22 22:10:09,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:10:09,350 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-22 22:10:09,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 22:10:09,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:09,353 INFO L422 BasicCegarLoop]: trace histogram [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 22:10:09,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:10:09,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:09,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:09,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1151880470, now seen corresponding path program 1 times [2020-08-22 22:10:09,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:09,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098330166] [2020-08-22 22:10:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:10:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:10:09,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098330166] [2020-08-22 22:10:09,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:09,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:10:09,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334319163] [2020-08-22 22:10:09,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:10:09,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:09,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:10:09,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:10:09,628 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 8 states. [2020-08-22 22:10:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:09,742 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-08-22 22:10:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:10:09,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-08-22 22:10:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:09,746 INFO L225 Difference]: With dead ends: 46 [2020-08-22 22:10:09,746 INFO L226 Difference]: Without dead ends: 31 [2020-08-22 22:10:09,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:10:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-22 22:10:09,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-22 22:10:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 22:10:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-08-22 22:10:09,769 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 25 [2020-08-22 22:10:09,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:09,769 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-08-22 22:10:09,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:10:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-08-22 22:10:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 22:10:09,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:09,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:09,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:10:09,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:09,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:09,772 INFO L82 PathProgramCache]: Analyzing trace with hash 860037162, now seen corresponding path program 2 times [2020-08-22 22:10:09,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:09,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407846262] [2020-08-22 22:10:09,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:09,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:09,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:10:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:09,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:10,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 22:10:10,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407846262] [2020-08-22 22:10:10,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:10,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:10:10,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227757826] [2020-08-22 22:10:10,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:10:10,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:10,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:10:10,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:10:10,080 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 11 states. [2020-08-22 22:10:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:10,246 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-08-22 22:10:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 22:10:10,249 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-08-22 22:10:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:10,251 INFO L225 Difference]: With dead ends: 54 [2020-08-22 22:10:10,251 INFO L226 Difference]: Without dead ends: 39 [2020-08-22 22:10:10,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:10:10,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-22 22:10:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-08-22 22:10:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-22 22:10:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-08-22 22:10:10,263 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2020-08-22 22:10:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:10,264 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-08-22 22:10:10,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:10:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-08-22 22:10:10,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-22 22:10:10,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:10,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:10,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:10:10,267 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:10,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:10,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1953505858, now seen corresponding path program 3 times [2020-08-22 22:10:10,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:10,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828564977] [2020-08-22 22:10:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:10,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 22:10:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:10,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:10,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:10,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 22:10:10,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828564977] [2020-08-22 22:10:10,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:10,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:10:10,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238137092] [2020-08-22 22:10:10,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:10:10,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:10,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:10:10,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:10:10,601 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 11 states. [2020-08-22 22:10:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:10,782 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2020-08-22 22:10:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 22:10:10,783 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-08-22 22:10:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:10,784 INFO L225 Difference]: With dead ends: 45 [2020-08-22 22:10:10,784 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 22:10:10,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:10:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 22:10:10,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 22:10:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 22:10:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 22:10:10,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-08-22 22:10:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:10,787 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 22:10:10,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:10:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 22:10:10,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 22:10:10,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:10:10,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 22:10:11,191 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:10:11,191 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:10:11,191 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:10:11,192 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 22:10:11,192 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 22:10:11,192 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:10:11,192 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2020-08-22 22:10:11,192 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-08-22 22:10:11,193 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 17) the Hoare annotation is: true [2020-08-22 22:10:11,193 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: false [2020-08-22 22:10:11,193 INFO L264 CegarLoopResult]: At program point L14(lines 14 16) the Hoare annotation is: (and (<= main_~result~0 2) (< 0 (+ (div main_~result~0 4294967296) 1))) [2020-08-22 22:10:11,193 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-08-22 22:10:11,193 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-08-22 22:10:11,194 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (or (and (<= 0 |main_#t~ret2|) (<= |main_#t~ret2| 0)) (and (<= |main_#t~ret2| 2) (<= 2 |main_#t~ret2|)) (and (<= |main_#t~ret2| 1) (<= 1 |main_#t~ret2|))) [2020-08-22 22:10:11,195 INFO L271 CegarLoopResult]: At program point L14-2(lines 11 17) the Hoare annotation is: true [2020-08-22 22:10:11,195 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (< 0 (+ (div main_~result~0 4294967296) 1)))) (or (and (<= 0 |main_#t~ret2|) (<= |main_#t~ret2| 0) (<= main_~result~0 0) .cse0) (and (<= |main_#t~ret2| 1) (<= 1 |main_#t~ret2|) (<= main_~result~0 1) .cse0) (and (<= main_~result~0 2) (<= |main_#t~ret2| 2) .cse0 (<= 2 |main_#t~ret2|)))) [2020-08-22 22:10:11,195 INFO L264 CegarLoopResult]: At program point idFINAL(lines 4 9) the Hoare annotation is: (let ((.cse0 (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0))) (.cse1 (and (<= 0 |id_#res|) (<= |id_#res| 0)))) (and (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) .cse0 .cse1) (or .cse0 .cse1 (and (<= 2 |id_#res|) (<= |id_#res| 2))))) [2020-08-22 22:10:11,196 INFO L264 CegarLoopResult]: At program point idEXIT(lines 4 9) the Hoare annotation is: (let ((.cse0 (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0))) (.cse1 (and (<= 0 |id_#res|) (<= |id_#res| 0)))) (and (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) .cse0 .cse1) (or .cse0 .cse1 (and (<= 2 |id_#res|) (<= |id_#res| 2))))) [2020-08-22 22:10:11,196 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-08-22 22:10:11,197 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= id_~ret~0 1) (<= 1 id_~ret~0))) [2020-08-22 22:10:11,197 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) (and (<= id_~ret~0 1) (<= 1 id_~ret~0))) [2020-08-22 22:10:11,197 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-08-22 22:10:11,198 INFO L264 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (and (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) [2020-08-22 22:10:11,198 INFO L271 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: true [2020-08-22 22:10:11,198 INFO L264 CegarLoopResult]: At program point L6-1(line 6) the Hoare annotation is: (or (and (<= 1 |id_#t~ret0|) (<= |id_#t~ret0| 1)) (and (<= |id_#t~ret0| 2) (<= 2 |id_#t~ret0|)) (and (<= 0 |id_#t~ret0|) (<= |id_#t~ret0| 0))) [2020-08-22 22:10:11,198 INFO L271 CegarLoopResult]: At program point L5-1(line 5) the Hoare annotation is: true [2020-08-22 22:10:11,198 INFO L264 CegarLoopResult]: At program point L6-2(line 6) the Hoare annotation is: (or (and (<= |id_#t~ret0| 2) (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0) (<= 2 |id_#t~ret0|)) (and (<= 0 |id_#t~ret0|) (<= |id_#t~ret0| 0) (<= id_~ret~0 1) (<= 1 id_~ret~0)) (and (<= id_~ret~0 2) (<= 1 |id_#t~ret0|) (<= |id_#t~ret0| 1) (<= 2 id_~ret~0))) [2020-08-22 22:10:11,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:10:11 BoogieIcfgContainer [2020-08-22 22:10:11,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:10:11,241 INFO L168 Benchmark]: Toolchain (without parser) took 3236.30 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 104.0 MB in the beginning and 203.0 MB in the end (delta: -98.9 MB). Peak memory consumption was 114.9 MB. Max. memory is 7.1 GB. [2020-08-22 22:10:11,242 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 22:10:11,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.90 ms. Allocated memory is still 140.0 MB. Free memory was 103.6 MB in the beginning and 94.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-22 22:10:11,244 INFO L168 Benchmark]: Boogie Preprocessor took 24.40 ms. Allocated memory is still 140.0 MB. Free memory was 94.5 MB in the beginning and 93.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:10:11,245 INFO L168 Benchmark]: RCFGBuilder took 362.55 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.0 MB in the beginning and 171.4 MB in the end (delta: -78.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:10:11,246 INFO L168 Benchmark]: TraceAbstraction took 2555.68 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 170.7 MB in the beginning and 203.0 MB in the end (delta: -32.2 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2020-08-22 22:10:11,250 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.90 ms. Allocated memory is still 140.0 MB. Free memory was 103.6 MB in the beginning and 94.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.40 ms. Allocated memory is still 140.0 MB. Free memory was 94.5 MB in the beginning and 93.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 362.55 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.0 MB in the beginning and 171.4 MB in the end (delta: -78.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2555.68 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 170.7 MB in the beginning and 203.0 MB in the end (delta: -32.2 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for id Derived contract for procedure id: ((((ret <= 2 && 2 <= ret) || (3 <= ret && ret / 4294967296 <= 0)) || (((\result <= 1 && ret <= 1) && 1 <= \result) && 1 <= ret)) || (0 <= \result && \result <= 0)) && (((((\result <= 1 && ret <= 1) && 1 <= \result) && 1 <= ret) || (0 <= \result && \result <= 0)) || (2 <= \result && \result <= 2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 24 SDslu, 587 SDs, 0 SdLazy, 212 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 38 PreInvPairs, 98 NumberOfFragments, 346 HoareAnnotationTreeSize, 38 FomulaSimplifications, 250 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 27 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 14082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 32/60 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...