/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:49:57,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:49:57,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:49:57,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:49:57,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:49:57,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:49:57,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:49:57,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:49:57,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:49:57,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:49:57,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:49:57,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:49:57,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:49:57,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:49:57,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:49:57,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:49:57,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:49:57,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:49:57,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:49:57,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:49:57,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:49:57,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:49:57,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:49:57,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:49:57,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 18:49:57,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:49:57,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:49:57,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:49:57,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:49:57,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:49:57,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:49:57,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:49:57,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:49:57,646 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:49:57,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:49:57,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:49:57,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:49:57,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:49:57,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:49:57,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:49:57,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:49:57,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:49:57,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:49:57,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:49:57,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:49:57,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:49:57,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:49:57,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:49:57,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:49:57,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:49:57,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:49:57,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:49:57,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:49:57,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:49:57,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:49:57,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:49:57,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:49:57,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:49:57,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:49:57,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:49:57,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:49:57,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:49:57,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:49:57,954 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:49:57,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c [2020-08-18 18:49:58,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79bf7524e/86dfaf41f54b43149da709a5adf256b8/FLAG22243710f [2020-08-18 18:49:58,427 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:49:58,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c [2020-08-18 18:49:58,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79bf7524e/86dfaf41f54b43149da709a5adf256b8/FLAG22243710f [2020-08-18 18:49:58,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79bf7524e/86dfaf41f54b43149da709a5adf256b8 [2020-08-18 18:49:58,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:49:58,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:49:58,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:49:58,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:49:58,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:49:58,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:49:58" (1/1) ... [2020-08-18 18:49:58,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d94f97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:58, skipping insertion in model container [2020-08-18 18:49:58,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:49:58" (1/1) ... [2020-08-18 18:49:58,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:49:58,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:49:59,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:49:59,073 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:49:59,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:49:59,110 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:49:59,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:59 WrapperNode [2020-08-18 18:49:59,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:49:59,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:49:59,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:49:59,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:49:59,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:59" (1/1) ... [2020-08-18 18:49:59,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:59" (1/1) ... [2020-08-18 18:49:59,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:59" (1/1) ... [2020-08-18 18:49:59,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:59" (1/1) ... [2020-08-18 18:49:59,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:59" (1/1) ... [2020-08-18 18:49:59,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:59" (1/1) ... [2020-08-18 18:49:59,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:59" (1/1) ... [2020-08-18 18:49:59,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:49:59,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:49:59,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:49:59,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:49:59,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:49:59,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:49:59,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:49:59,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:49:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:49:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:49:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:49:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:49:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:49:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:49:59,518 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:49:59,518 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 18:49:59,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:49:59 BoogieIcfgContainer [2020-08-18 18:49:59,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:49:59,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:49:59,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:49:59,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:49:59,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:49:58" (1/3) ... [2020-08-18 18:49:59,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72193d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:49:59, skipping insertion in model container [2020-08-18 18:49:59,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:59" (2/3) ... [2020-08-18 18:49:59,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72193d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:49:59, skipping insertion in model container [2020-08-18 18:49:59,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:49:59" (3/3) ... [2020-08-18 18:49:59,529 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+sep-reducer.c [2020-08-18 18:49:59,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:49:59,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:49:59,565 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:49:59,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:49:59,592 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:49:59,592 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:49:59,592 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:49:59,592 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:49:59,593 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:49:59,593 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:49:59,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:49:59,616 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-18 18:49:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 18:49:59,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:59,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:59,629 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:59,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:59,643 INFO L82 PathProgramCache]: Analyzing trace with hash 453243256, now seen corresponding path program 1 times [2020-08-18 18:49:59,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:59,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219772938] [2020-08-18 18:49:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:00,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:50:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:50:00,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219772938] [2020-08-18 18:50:00,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:50:00,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:50:00,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012028931] [2020-08-18 18:50:00,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:50:00,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:50:00,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:50:00,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:50:00,203 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-08-18 18:50:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:50:10,855 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2020-08-18 18:50:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:50:10,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-08-18 18:50:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:50:10,868 INFO L225 Difference]: With dead ends: 71 [2020-08-18 18:50:10,868 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 18:50:10,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:50:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 18:50:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-08-18 18:50:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 18:50:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-08-18 18:50:10,914 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2020-08-18 18:50:10,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:50:10,915 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-08-18 18:50:10,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:50:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-08-18 18:50:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 18:50:10,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:50:10,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:50:10,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:50:10,917 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:50:10,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:50:10,918 INFO L82 PathProgramCache]: Analyzing trace with hash -386324053, now seen corresponding path program 1 times [2020-08-18 18:50:10,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:50:10,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237426683] [2020-08-18 18:50:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:50:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:50:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:50:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:50:11,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237426683] [2020-08-18 18:50:11,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:50:11,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:50:11,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226551756] [2020-08-18 18:50:11,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:50:11,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:50:11,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:50:11,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:50:11,279 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2020-08-18 18:50:15,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:50:15,631 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2020-08-18 18:50:15,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:50:15,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 18:50:15,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:50:15,632 INFO L225 Difference]: With dead ends: 55 [2020-08-18 18:50:15,633 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 18:50:15,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:50:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 18:50:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 18:50:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 18:50:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 18:50:15,635 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-18 18:50:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:50:15,635 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 18:50:15,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:50:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 18:50:15,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 18:50:15,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:50:15,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 18:50:15,738 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 18:50:15,738 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_22_0~0 |old(~__tmp_22_0~0)|) (= ~__tmp_22_1~0 |old(~__tmp_22_1~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|) (= ~__tmp_25_1~0 |old(~__tmp_25_1~0)|) (= ~__tmp_31_0~0 |old(~__tmp_31_0~0)|) (= ~__tmp_28_0~0 |old(~__tmp_28_0~0)|) (= ~__tmp_25_0~0 |old(~__tmp_25_0~0)|)) [2020-08-18 18:50:15,739 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:50:15,739 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:50:15,739 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 18:50:15,739 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 18:50:15,739 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 18:50:15,739 INFO L268 CegarLoopResult]: For program point L93(lines 93 102) no Hoare annotation was computed. [2020-08-18 18:50:15,740 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 145) no Hoare annotation was computed. [2020-08-18 18:50:15,740 INFO L264 CegarLoopResult]: At program point L40(lines 22 139) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)))) main_~main__x~0) [2020-08-18 18:50:15,740 INFO L268 CegarLoopResult]: For program point L65(lines 65 80) no Hoare annotation was computed. [2020-08-18 18:50:15,740 INFO L268 CegarLoopResult]: For program point L86(lines 86 108) no Hoare annotation was computed. [2020-08-18 18:50:15,740 INFO L268 CegarLoopResult]: For program point L20(lines 20 144) no Hoare annotation was computed. [2020-08-18 18:50:15,740 INFO L268 CegarLoopResult]: For program point L115(lines 115 137) no Hoare annotation was computed. [2020-08-18 18:50:15,741 INFO L268 CegarLoopResult]: For program point L45(lines 45 82) no Hoare annotation was computed. [2020-08-18 18:50:15,741 INFO L271 CegarLoopResult]: At program point L136(lines 14 145) the Hoare annotation is: true [2020-08-18 18:50:15,741 INFO L268 CegarLoopResult]: For program point L33(lines 33 138) no Hoare annotation was computed. [2020-08-18 18:50:15,741 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-08-18 18:50:15,741 INFO L268 CegarLoopResult]: For program point L54(lines 54 81) no Hoare annotation was computed. [2020-08-18 18:50:15,741 INFO L264 CegarLoopResult]: At program point L50(lines 22 139) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)))) main_~main__x~0) [2020-08-18 18:50:15,742 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 145) no Hoare annotation was computed. [2020-08-18 18:50:15,742 INFO L271 CegarLoopResult]: At program point L133(lines 33 138) the Hoare annotation is: true [2020-08-18 18:50:15,742 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2020-08-18 18:50:15,742 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 145) the Hoare annotation is: (and (= |old(~__tmp_22_1~0)| ~__tmp_22_1~0) (= |old(~__tmp_22_0~0)| ~__tmp_22_0~0) (= |old(~__return_65~0)| ~__return_65~0) (= |old(~__tmp_25_1~0)| ~__tmp_25_1~0) (= |old(~__tmp_25_0~0)| ~__tmp_25_0~0) (= |old(~__tmp_31_0~0)| ~__tmp_31_0~0) (= |old(~__tmp_28_0~0)| ~__tmp_28_0~0)) [2020-08-18 18:50:15,743 INFO L264 CegarLoopResult]: At program point L59(lines 34 110) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)))) main_~main__x~0) [2020-08-18 18:50:15,743 INFO L271 CegarLoopResult]: At program point L121(lines 33 138) the Hoare annotation is: true [2020-08-18 18:50:15,743 INFO L268 CegarLoopResult]: For program point L22(lines 22 139) no Hoare annotation was computed. [2020-08-18 18:50:15,743 INFO L268 CegarLoopResult]: For program point L43(lines 43 109) no Hoare annotation was computed. [2020-08-18 18:50:15,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:50:15 BoogieIcfgContainer [2020-08-18 18:50:15,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:50:15,764 INFO L168 Benchmark]: Toolchain (without parser) took 16970.54 ms. Allocated memory was 137.9 MB in the beginning and 230.2 MB in the end (delta: 92.3 MB). Free memory was 100.6 MB in the beginning and 166.6 MB in the end (delta: -66.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:50:15,765 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-18 18:50:15,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.37 ms. Allocated memory is still 137.9 MB. Free memory was 100.6 MB in the beginning and 89.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-18 18:50:15,767 INFO L168 Benchmark]: Boogie Preprocessor took 101.18 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 89.9 MB in the beginning and 176.6 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:50:15,768 INFO L168 Benchmark]: RCFGBuilder took 309.32 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 159.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-08-18 18:50:15,769 INFO L168 Benchmark]: TraceAbstraction took 16238.90 ms. Allocated memory was 199.2 MB in the beginning and 230.2 MB in the end (delta: 30.9 MB). Free memory was 159.8 MB in the beginning and 166.6 MB in the end (delta: -6.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:50:15,774 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.37 ms. Allocated memory is still 137.9 MB. Free memory was 100.6 MB in the beginning and 89.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.18 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 89.9 MB in the beginning and 176.6 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 309.32 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 159.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16238.90 ms. Allocated memory was 199.2 MB in the beginning and 230.2 MB in the end (delta: 30.9 MB). Free memory was 159.8 MB in the beginning and 166.6 MB in the end (delta: -6.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: 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: 34]: Loop Invariant Derived loop invariant: 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) == main__x - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) == main__x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) == main__x - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 15.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 26 SDslu, 77 SDs, 0 SdLazy, 127 SolverSat, 7 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 14.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 109 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...