/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:54:34,996 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 02:54:35,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:54:35,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:54:35,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:54:35,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:54:35,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:54:35,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:54:35,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:54:35,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:54:35,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:54:35,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:54:35,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:54:35,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:54:35,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:54:35,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:54:35,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:54:35,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:54:35,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:54:35,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:54:35,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:54:35,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:54:35,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:54:35,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:54:35,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:54:35,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:54:35,113 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 [2020-08-19 02:54:35,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:54:35,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:54:35,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:54:35,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:54:35,158 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:54:35,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:54:35,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:54:35,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:54:35,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:54:35,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:54:35,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:54:35,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:54:35,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:54:35,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:54:35,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:54:35,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:54:35,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:54:35,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:54:35,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:54:35,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:54:35,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:54:35,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:54:35,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:54:35,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:54:35,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:54:35,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:54:35,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:54:35,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:54:35,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:54:35,165 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:54:35,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:54:35,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:54:35,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:54:35,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:54:35,483 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:54:35,484 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2020-08-19 02:54:35,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66935d9aa/c0a7dfb20a944eb8ab6076fae5935c8b/FLAGac1b500f2 [2020-08-19 02:54:36,014 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:54:36,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2020-08-19 02:54:36,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66935d9aa/c0a7dfb20a944eb8ab6076fae5935c8b/FLAGac1b500f2 [2020-08-19 02:54:36,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66935d9aa/c0a7dfb20a944eb8ab6076fae5935c8b [2020-08-19 02:54:36,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:54:36,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:54:36,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:54:36,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:54:36,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:54:36,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:54:36" (1/1) ... [2020-08-19 02:54:36,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36, skipping insertion in model container [2020-08-19 02:54:36,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:54:36" (1/1) ... [2020-08-19 02:54:36,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:54:36,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:54:36,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:54:36,619 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:54:36,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:54:36,670 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:54:36,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36 WrapperNode [2020-08-19 02:54:36,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:54:36,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:54:36,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:54:36,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:54:36,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36" (1/1) ... [2020-08-19 02:54:36,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36" (1/1) ... [2020-08-19 02:54:36,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36" (1/1) ... [2020-08-19 02:54:36,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36" (1/1) ... [2020-08-19 02:54:36,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36" (1/1) ... [2020-08-19 02:54:36,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36" (1/1) ... [2020-08-19 02:54:36,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36" (1/1) ... [2020-08-19 02:54:36,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:54:36,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:54:36,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:54:36,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:54:36,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36" (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 [2020-08-19 02:54:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:54:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:54:36,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:54:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:54:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:54:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:54:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:54:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:54:36,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:54:37,130 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:54:37,131 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 02:54:37,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:54:37 BoogieIcfgContainer [2020-08-19 02:54:37,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:54:37,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:54:37,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:54:37,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:54:37,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:54:36" (1/3) ... [2020-08-19 02:54:37,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bf87d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:54:37, skipping insertion in model container [2020-08-19 02:54:37,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:36" (2/3) ... [2020-08-19 02:54:37,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bf87d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:54:37, skipping insertion in model container [2020-08-19 02:54:37,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:54:37" (3/3) ... [2020-08-19 02:54:37,143 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+lhb-reducer.c [2020-08-19 02:54:37,154 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:54:37,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:54:37,175 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:54:37,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:54:37,200 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:54:37,200 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:54:37,200 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:54:37,200 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:54:37,201 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:54:37,201 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:54:37,201 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:54:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-19 02:54:37,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 02:54:37,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:37,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:54:37,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:54:37,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:37,234 INFO L82 PathProgramCache]: Analyzing trace with hash 446778609, now seen corresponding path program 1 times [2020-08-19 02:54:37,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:37,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989081368] [2020-08-19 02:54:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:54:37,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989081368] [2020-08-19 02:54:37,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:37,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:54:37,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994233540] [2020-08-19 02:54:37,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:54:37,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:37,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:54:37,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:54:37,761 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-08-19 02:54:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:48,457 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2020-08-19 02:54:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:54:48,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-08-19 02:54:48,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:48,470 INFO L225 Difference]: With dead ends: 71 [2020-08-19 02:54:48,471 INFO L226 Difference]: Without dead ends: 35 [2020-08-19 02:54:48,474 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 [2020-08-19 02:54:48,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-19 02:54:48,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-08-19 02:54:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-19 02:54:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-08-19 02:54:48,517 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2020-08-19 02:54:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:48,518 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-08-19 02:54:48,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:54:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-08-19 02:54:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 02:54:48,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:48,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:54:48,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:54:48,520 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:54:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:48,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1003929308, now seen corresponding path program 1 times [2020-08-19 02:54:48,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:48,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911381588] [2020-08-19 02:54:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:49,016 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 22 [2020-08-19 02:54:49,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:54:49,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911381588] [2020-08-19 02:54:49,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:49,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:54:49,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11836237] [2020-08-19 02:54:49,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:49,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:49,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:49,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:49,116 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 6 states. [2020-08-19 02:55:03,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:03,950 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2020-08-19 02:55:03,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:55:03,952 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-19 02:55:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:03,952 INFO L225 Difference]: With dead ends: 57 [2020-08-19 02:55:03,953 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:55:03,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:55:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:55:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:55:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:55:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:55:03,956 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-19 02:55:03,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:03,956 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:55:03,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:55:03,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:55:03,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:55:03,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:55:03,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:55:04,075 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:55:04,075 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_88_1~0 |old(~__tmp_88_1~0)|) (= ~__tmp_91_1~0 |old(~__tmp_91_1~0)|) (= ~__tmp_91_0~0 |old(~__tmp_91_0~0)|) (= ~__return_121~0 |old(~__return_121~0)|) (= ~__tmp_88_0~0 |old(~__tmp_88_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__tmp_93_0~0 |old(~__tmp_93_0~0)|) (= ~__tmp_112_0~0 |old(~__tmp_112_0~0)|) (= ~__tmp_94_0~0 |old(~__tmp_94_0~0)|)) [2020-08-19 02:55:04,076 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:55:04,076 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:55:04,076 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 02:55:04,076 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 02:55:04,076 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:55:04,076 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-08-19 02:55:04,077 INFO L268 CegarLoopResult]: For program point L126(lines 126 141) no Hoare annotation was computed. [2020-08-19 02:55:04,077 INFO L268 CegarLoopResult]: For program point L60(lines 60 82) no Hoare annotation was computed. [2020-08-19 02:55:04,077 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 149) no Hoare annotation was computed. [2020-08-19 02:55:04,077 INFO L268 CegarLoopResult]: For program point L23(lines 23 143) no Hoare annotation was computed. [2020-08-19 02:55:04,077 INFO L271 CegarLoopResult]: At program point L81(lines 15 149) the Hoare annotation is: true [2020-08-19 02:55:04,077 INFO L268 CegarLoopResult]: For program point L115(lines 115 142) no Hoare annotation was computed. [2020-08-19 02:55:04,078 INFO L271 CegarLoopResult]: At program point L140(lines 23 143) the Hoare annotation is: true [2020-08-19 02:55:04,078 INFO L268 CegarLoopResult]: For program point L37(lines 37 84) no Hoare annotation was computed. [2020-08-19 02:55:04,078 INFO L271 CegarLoopResult]: At program point L132(lines 23 143) the Hoare annotation is: true [2020-08-19 02:55:04,078 INFO L268 CegarLoopResult]: For program point L95(lines 95 104) no Hoare annotation was computed. [2020-08-19 02:55:04,078 INFO L264 CegarLoopResult]: At program point L120(lines 23 143) 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) [2020-08-19 02:55:04,079 INFO L264 CegarLoopResult]: At program point L54(lines 24 112) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* .cse0 4294967296) (* (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3) 3))) main_~main__x~0) [2020-08-19 02:55:04,079 INFO L268 CegarLoopResult]: For program point L21(lines 21 148) no Hoare annotation was computed. [2020-08-19 02:55:04,079 INFO L268 CegarLoopResult]: For program point L46(lines 46 83) no Hoare annotation was computed. [2020-08-19 02:55:04,079 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 149) no Hoare annotation was computed. [2020-08-19 02:55:04,079 INFO L264 CegarLoopResult]: At program point L42(lines 24 112) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* .cse0 4294967296) (* (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3) 3))) main_~main__x~0) [2020-08-19 02:55:04,080 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 97) no Hoare annotation was computed. [2020-08-19 02:55:04,080 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 149) the Hoare annotation is: (and (= ~__tmp_88_1~0 |old(~__tmp_88_1~0)|) (= ~__tmp_91_1~0 |old(~__tmp_91_1~0)|) (= |old(~__tmp_112_0~0)| ~__tmp_112_0~0) (= ~__tmp_91_0~0 |old(~__tmp_91_0~0)|) (= |old(~__return_121~0)| ~__return_121~0) (= ~__tmp_88_0~0 |old(~__tmp_88_0~0)|) (= ~__tmp_93_0~0 |old(~__tmp_93_0~0)|) (= ~__tmp_94_0~0 |old(~__tmp_94_0~0)|)) [2020-08-19 02:55:04,080 INFO L268 CegarLoopResult]: For program point L88(lines 88 110) no Hoare annotation was computed. [2020-08-19 02:55:04,080 INFO L268 CegarLoopResult]: For program point L35(lines 35 111) no Hoare annotation was computed. [2020-08-19 02:55:04,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:55:04 BoogieIcfgContainer [2020-08-19 02:55:04,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:55:04,103 INFO L168 Benchmark]: Toolchain (without parser) took 27715.05 ms. Allocated memory was 147.8 MB in the beginning and 232.3 MB in the end (delta: 84.4 MB). Free memory was 103.9 MB in the beginning and 155.3 MB in the end (delta: -51.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:04,104 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:55:04,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.97 ms. Allocated memory is still 147.8 MB. Free memory was 103.7 MB in the beginning and 92.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:04,106 INFO L168 Benchmark]: Boogie Preprocessor took 114.47 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 92.9 MB in the beginning and 181.3 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:04,106 INFO L168 Benchmark]: RCFGBuilder took 347.61 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 164.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:04,108 INFO L168 Benchmark]: TraceAbstraction took 26964.30 ms. Allocated memory was 202.9 MB in the beginning and 232.3 MB in the end (delta: 29.4 MB). Free memory was 163.8 MB in the beginning and 155.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 37.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:04,112 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 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.97 ms. Allocated memory is still 147.8 MB. Free memory was 103.7 MB in the beginning and 92.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.47 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 92.9 MB in the beginning and 181.3 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 347.61 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 164.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26964.30 ms. Allocated memory was 202.9 MB in the beginning and 232.3 MB in the end (delta: 29.4 MB). Free memory was 163.8 MB in the beginning and 155.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 37.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 97]: 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: 24]: Loop Invariant Derived loop invariant: main__x / 4294967296 * 4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * 3 == main__x - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) == main__x - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: main__x / 4294967296 * 4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * 3 == main__x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 25.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 32 SDslu, 79 SDs, 0 SdLazy, 147 SolverSat, 9 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 24.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s 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, 19 NumberOfFragments, 115 HoareAnnotationTreeSize, 10 FomulaSimplifications, 134 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3784 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...