/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:20:41,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:20:41,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:20:41,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:20:41,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:20:41,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:20:41,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:20:41,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:20:41,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:20:41,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:20:41,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:20:41,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:20:41,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:20:41,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:20:41,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:20:41,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:20:41,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:20:41,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:20:41,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:20:41,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:20:41,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:20:41,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:20:41,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:20:41,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:20:41,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 04:20:41,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:20:41,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:20:41,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:20:41,413 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 04:20:41,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:20:41,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:20:41,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:20:41,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:20:41,462 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:20:41,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:20:41,462 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:20:41,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:20:41,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:20:41,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:20:41,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:20:41,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:20:41,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:20:41,465 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:20:41,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:20:41,465 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:20:41,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:20:41,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:20:41,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:20:41,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:20:41,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:20:41,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:20:41,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:20:41,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:20:41,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:20:41,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:20:41,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:20:41,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:20:41,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:20:41,468 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:20:41,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:20:41,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:20:41,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:20:41,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:20:41,773 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:20:41,774 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_7-2.c [2020-08-19 04:20:41,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ec01dc58/bead8456cb1a423985fd94eba2858238/FLAGf8ad0290c [2020-08-19 04:20:42,325 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:20:42,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_7-2.c [2020-08-19 04:20:42,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ec01dc58/bead8456cb1a423985fd94eba2858238/FLAGf8ad0290c [2020-08-19 04:20:42,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ec01dc58/bead8456cb1a423985fd94eba2858238 [2020-08-19 04:20:42,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:20:42,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:20:42,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:42,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:20:42,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:20:42,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:42" (1/1) ... [2020-08-19 04:20:42,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ec3a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42, skipping insertion in model container [2020-08-19 04:20:42,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:42" (1/1) ... [2020-08-19 04:20:42,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:20:42,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:20:42,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:42,963 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:20:42,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:42,989 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:20:42,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42 WrapperNode [2020-08-19 04:20:42,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:42,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:20:42,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:20:42,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:20:43,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42" (1/1) ... [2020-08-19 04:20:43,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42" (1/1) ... [2020-08-19 04:20:43,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42" (1/1) ... [2020-08-19 04:20:43,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42" (1/1) ... [2020-08-19 04:20:43,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42" (1/1) ... [2020-08-19 04:20:43,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42" (1/1) ... [2020-08-19 04:20:43,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42" (1/1) ... [2020-08-19 04:20:43,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:20:43,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:20:43,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:20:43,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:20:43,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42" (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 04:20:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:20:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:20:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 04:20:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:20:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:20:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 04:20:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 04:20:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:20:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:20:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:20:43,321 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:20:43,322 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 04:20:43,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:43 BoogieIcfgContainer [2020-08-19 04:20:43,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:20:43,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:20:43,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:20:43,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:20:43,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:20:42" (1/3) ... [2020-08-19 04:20:43,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d3d746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:43, skipping insertion in model container [2020-08-19 04:20:43,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:42" (2/3) ... [2020-08-19 04:20:43,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d3d746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:43, skipping insertion in model container [2020-08-19 04:20:43,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:43" (3/3) ... [2020-08-19 04:20:43,333 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_7-2.c [2020-08-19 04:20:43,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:20:43,351 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:20:43,365 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:20:43,389 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:20:43,389 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:20:43,389 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:20:43,389 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:20:43,390 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:20:43,390 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:20:43,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:20:43,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:20:43,404 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-19 04:20:43,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 04:20:43,409 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:43,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:20:43,411 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:43,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:43,415 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-08-19 04:20:43,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:43,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266502131] [2020-08-19 04:20:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:43,792 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-08-19 04:20:43,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:20:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:43,920 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 04:20:43,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266502131] [2020-08-19 04:20:43,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:20:43,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:20:43,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469491261] [2020-08-19 04:20:43,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:20:43,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:20:43,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:20:43,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:20:43,945 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-08-19 04:20:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:20:46,117 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-08-19 04:20:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 04:20:46,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-08-19 04:20:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:20:46,128 INFO L225 Difference]: With dead ends: 33 [2020-08-19 04:20:46,128 INFO L226 Difference]: Without dead ends: 20 [2020-08-19 04:20:46,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:20:46,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-19 04:20:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-08-19 04:20:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 04:20:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-08-19 04:20:46,175 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-08-19 04:20:46,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:20:46,176 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-08-19 04:20:46,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:20:46,176 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-08-19 04:20:46,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 04:20:46,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:46,178 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:20:46,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:20:46,179 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:46,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:46,179 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-08-19 04:20:46,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:46,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389322094] [2020-08-19 04:20:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:20:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:20:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:20:46,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389322094] [2020-08-19 04:20:46,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:20:46,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 04:20:46,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125631118] [2020-08-19 04:20:46,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:20:46,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:20:46,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:20:46,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:20:46,432 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-08-19 04:20:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:20:46,955 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-08-19 04:20:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 04:20:46,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-08-19 04:20:46,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:20:46,957 INFO L225 Difference]: With dead ends: 19 [2020-08-19 04:20:46,957 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:20:46,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:20:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:20:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:20:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:20:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:20:46,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-19 04:20:46,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:20:46,960 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:20:46,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:20:46,960 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:20:46,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:20:46,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:20:46,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:20:47,020 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 04:20:47,020 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:20:47,021 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:20:47,021 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 04:20:47,021 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 04:20:47,021 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 04:20:47,021 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 27) the Hoare annotation is: true [2020-08-19 04:20:47,021 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 27) no Hoare annotation was computed. [2020-08-19 04:20:47,022 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (<= (+ (* 4 main_~x~0) main_~z~0) (+ (* 2 main_~y~0) (* 4194304 (div (+ (* main_~x~0 4) (* main_~y~0 (- 2)) main_~z~0) 4194304)))) [2020-08-19 04:20:47,023 INFO L264 CegarLoopResult]: At program point L24-1(lines 18 25) the Hoare annotation is: (<= (+ (* 4 main_~x~0) main_~z~0) (+ (* 2 main_~y~0) (* 4194304 (div (+ (* main_~x~0 4) (* main_~y~0 (- 2)) main_~z~0) 4194304)))) [2020-08-19 04:20:47,023 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 25) no Hoare annotation was computed. [2020-08-19 04:20:47,023 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 27) no Hoare annotation was computed. [2020-08-19 04:20:47,023 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-08-19 04:20:47,023 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-08-19 04:20:47,024 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-08-19 04:20:47,024 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-08-19 04:20:47,024 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-19 04:20:47,024 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-08-19 04:20:47,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:20:47 BoogieIcfgContainer [2020-08-19 04:20:47,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:20:47,054 INFO L168 Benchmark]: Toolchain (without parser) took 4332.70 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 105.4 MB in the beginning and 120.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:47,056 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-19 04:20:47,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.59 ms. Allocated memory is still 142.1 MB. Free memory was 105.0 MB in the beginning and 95.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:47,066 INFO L168 Benchmark]: Boogie Preprocessor took 103.23 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 95.4 MB in the beginning and 183.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:47,069 INFO L168 Benchmark]: RCFGBuilder took 230.75 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 172.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:47,071 INFO L168 Benchmark]: TraceAbstraction took 3724.02 ms. Allocated memory is still 205.0 MB. Free memory was 172.1 MB in the beginning and 120.6 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:47,080 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.59 ms. Allocated memory is still 142.1 MB. Free memory was 105.0 MB in the beginning and 95.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.23 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 95.4 MB in the beginning and 183.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.75 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 172.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3724.02 ms. Allocated memory is still 205.0 MB. Free memory was 172.1 MB in the beginning and 120.6 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 18]: Loop Invariant Derived loop invariant: 4 * x + z <= 2 * y + 4194304 * ((x * 4 + y * -2 + z) / 4194304) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 11 SDslu, 59 SDs, 0 SdLazy, 32 SolverSat, 5 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 49 HoareAnnotationTreeSize, 9 FomulaSimplifications, 69 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2568 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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...