/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=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:08:06,318 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 06:08:06,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:08:06,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:08:06,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:08:06,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:08:06,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:08:06,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:08:06,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:08:06,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:08:06,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:08:06,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:08:06,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:08:06,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:08:06,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:08:06,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:08:06,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:08:06,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:08:06,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:08:06,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:08:06,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:08:06,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:08:06,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 06:08:06,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:08:06,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:08:06,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:08:06,438 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 06:08:06,459 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:08:06,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:08:06,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:08:06,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:08:06,461 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:08:06,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:08:06,462 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:08:06,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:08:06,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:08:06,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:08:06,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:08:06,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:08:06,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:08:06,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:08:06,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:08:06,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:08:06,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:08:06,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:08:06,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:08:06,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:08:06,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:08:06,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:08:06,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:08:06,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:08:06,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:08:06,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:08:06,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:08:06,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:08:06,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:08:06,466 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:08:06,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:08:06,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:08:06,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:08:06,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:08:06,812 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:08:06,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2020-08-19 06:08:06,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8148d8476/f226e9b0293c4593a15b292e5c24472a/FLAG7f2ac67de [2020-08-19 06:08:07,330 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:08:07,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/id_trans.i [2020-08-19 06:08:07,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8148d8476/f226e9b0293c4593a15b292e5c24472a/FLAG7f2ac67de [2020-08-19 06:08:07,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8148d8476/f226e9b0293c4593a15b292e5c24472a [2020-08-19 06:08:07,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:08:07,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:08:07,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:08:07,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:08:07,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:08:07,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:08:07" (1/1) ... [2020-08-19 06:08:07,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b4b692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:07, skipping insertion in model container [2020-08-19 06:08:07,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:08:07" (1/1) ... [2020-08-19 06:08:07,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:08:07,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:08:08,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:08:08,058 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:08:08,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:08:08,086 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:08:08,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:08 WrapperNode [2020-08-19 06:08:08,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:08:08,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:08:08,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:08:08,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:08:08,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:08" (1/1) ... [2020-08-19 06:08:08,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:08" (1/1) ... [2020-08-19 06:08:08,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:08" (1/1) ... [2020-08-19 06:08:08,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:08" (1/1) ... [2020-08-19 06:08:08,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:08" (1/1) ... [2020-08-19 06:08:08,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:08" (1/1) ... [2020-08-19 06:08:08,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:08" (1/1) ... [2020-08-19 06:08:08,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:08:08,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:08:08,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:08:08,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:08:08,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:08" (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 06:08:08,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:08:08,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:08:08,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:08:08,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 06:08:08,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:08:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:08:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:08:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:08:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 06:08:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:08:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:08:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:08:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:08:08,474 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:08:08,474 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 06:08:08,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:08:08 BoogieIcfgContainer [2020-08-19 06:08:08,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:08:08,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:08:08,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:08:08,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:08:08,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:08:07" (1/3) ... [2020-08-19 06:08:08,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45635de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:08:08, skipping insertion in model container [2020-08-19 06:08:08,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:08:08" (2/3) ... [2020-08-19 06:08:08,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45635de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:08:08, skipping insertion in model container [2020-08-19 06:08:08,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:08:08" (3/3) ... [2020-08-19 06:08:08,486 INFO L109 eAbstractionObserver]: Analyzing ICFG id_trans.i [2020-08-19 06:08:08,496 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:08:08,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:08:08,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:08:08,541 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:08:08,542 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:08:08,542 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:08:08,542 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:08:08,542 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:08:08,542 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:08:08,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:08:08,543 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:08:08,558 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-19 06:08:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-19 06:08:08,563 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:08:08,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:08:08,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:08:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:08:08,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1541464652, now seen corresponding path program 1 times [2020-08-19 06:08:08,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:08:08,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949403712] [2020-08-19 06:08:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:08:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:08:08,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:08:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:08:08,783 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 06:08:08,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949403712] [2020-08-19 06:08:08,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:08:08,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:08:08,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791841187] [2020-08-19 06:08:08,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:08:08,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:08:08,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:08:08,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:08:08,813 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-08-19 06:08:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:08:08,930 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2020-08-19 06:08:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:08:08,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-19 06:08:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:08:08,944 INFO L225 Difference]: With dead ends: 46 [2020-08-19 06:08:08,944 INFO L226 Difference]: Without dead ends: 22 [2020-08-19 06:08:08,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:08:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-19 06:08:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-19 06:08:09,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 06:08:09,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-08-19 06:08:09,007 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2020-08-19 06:08:09,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:08:09,008 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-08-19 06:08:09,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:08:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-08-19 06:08:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 06:08:09,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:08:09,010 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:08:09,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:08:09,011 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:08:09,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:08:09,012 INFO L82 PathProgramCache]: Analyzing trace with hash -621797359, now seen corresponding path program 1 times [2020-08-19 06:08:09,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:08:09,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216480375] [2020-08-19 06:08:09,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:08:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:08:09,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:08:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:08:09,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:08:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:08:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:08:09,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216480375] [2020-08-19 06:08:09,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:08:09,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:08:09,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082501956] [2020-08-19 06:08:09,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:08:09,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:08:09,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:08:09,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:08:09,113 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2020-08-19 06:08:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:08:09,172 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-08-19 06:08:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:08:09,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-19 06:08:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:08:09,175 INFO L225 Difference]: With dead ends: 28 [2020-08-19 06:08:09,175 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 06:08:09,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:08:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 06:08:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-19 06:08:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-19 06:08:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-08-19 06:08:09,191 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2020-08-19 06:08:09,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:08:09,192 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-08-19 06:08:09,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:08:09,192 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-08-19 06:08:09,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 06:08:09,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:08:09,194 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:08:09,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:08:09,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:08:09,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:08:09,195 INFO L82 PathProgramCache]: Analyzing trace with hash -561745487, now seen corresponding path program 1 times [2020-08-19 06:08:09,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:08:09,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434687647] [2020-08-19 06:08:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:08:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:08:09,256 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:08:09,256 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:08:09,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:08:09,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:08:09 BoogieIcfgContainer [2020-08-19 06:08:09,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:08:09,281 INFO L168 Benchmark]: Toolchain (without parser) took 1499.78 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 122.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:08:09,282 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 06:08:09,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.15 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:08:09,285 INFO L168 Benchmark]: Boogie Preprocessor took 115.69 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 92.7 MB in the beginning and 179.4 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:08:09,286 INFO L168 Benchmark]: RCFGBuilder took 275.13 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 166.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:08:09,287 INFO L168 Benchmark]: TraceAbstraction took 799.16 ms. Allocated memory is still 201.3 MB. Free memory was 165.6 MB in the beginning and 122.8 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:08:09,291 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.15 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.69 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 92.7 MB in the beginning and 179.4 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 275.13 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 166.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 799.16 ms. Allocated memory is still 201.3 MB. Free memory was 165.6 MB in the beginning and 122.8 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int idBitLength, material_length, nlen; [L15] int j, k; [L16] nlen = __VERIFIER_nondet_int() [L17] idBitLength = __VERIFIER_nondet_int() [L18] material_length = __VERIFIER_nondet_int() [L19] COND FALSE !(!( nlen == idBitLength / 32 )) [L20] j = 0 [L20] COND TRUE (j < idBitLength / 8) && (j < material_length) [L21] CALL __VERIFIER_assert( 0 <= j) [L7] COND FALSE !(!(cond)) [L21] RET __VERIFIER_assert( 0 <= j) [L22] CALL __VERIFIER_assert( j < material_length ) [L7] COND FALSE !(!(cond)) [L22] RET __VERIFIER_assert( j < material_length ) [L23] CALL __VERIFIER_assert( 0 <= j/4 ) [L7] COND FALSE !(!(cond)) [L23] RET __VERIFIER_assert( 0 <= j/4 ) [L24] CALL __VERIFIER_assert( j/4 < nlen) [L7] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 13 SDslu, 98 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 incorrect! Received shutdown request...