/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -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-d623d84 [2020-07-20 11:59:39,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:59:39,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:59:39,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:59:39,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:59:39,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:59:39,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:59:39,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:59:39,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:59:39,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:59:39,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:59:39,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:59:39,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:59:39,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:59:39,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:59:39,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:59:39,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:59:39,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:59:39,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:59:39,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:59:39,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:59:39,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:59:39,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:59:39,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:59:39,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:59:39,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:59:39,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:59:39,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:59:39,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:59:39,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:59:39,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:59:39,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:59:39,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:59:39,707 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:59:39,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:59:39,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:59:39,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:59:39,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:59:39,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:59:39,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:59:39,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:59:39,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:59:39,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:59:39,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:59:39,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:59:39,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:59:39,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:59:39,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:59:39,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:59:39,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:59:39,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:59:39,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:59:39,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:59:39,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:59:39,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:59:39,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:39,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:59:39,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:59:39,713 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:59:40,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:59:40,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:59:40,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:59:40,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:59:40,067 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:59:40,068 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2020-07-20 11:59:40,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8664b3b0f/751c81ce7e114e2d9d39a59d2c954917/FLAGa5167eb2f [2020-07-20 11:59:40,601 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:59:40,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2020-07-20 11:59:40,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8664b3b0f/751c81ce7e114e2d9d39a59d2c954917/FLAGa5167eb2f [2020-07-20 11:59:41,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8664b3b0f/751c81ce7e114e2d9d39a59d2c954917 [2020-07-20 11:59:41,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:59:41,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:59:41,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:59:41,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:59:41,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:59:41,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:59:41" (1/1) ... [2020-07-20 11:59:41,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7506951f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41, skipping insertion in model container [2020-07-20 11:59:41,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:59:41" (1/1) ... [2020-07-20 11:59:41,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:59:41,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:59:41,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:59:41,335 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:59:41,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:59:41,384 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:59:41,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41 WrapperNode [2020-07-20 11:59:41,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:59:41,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:59:41,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:59:41,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:59:41,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41" (1/1) ... [2020-07-20 11:59:41,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41" (1/1) ... [2020-07-20 11:59:41,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41" (1/1) ... [2020-07-20 11:59:41,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41" (1/1) ... [2020-07-20 11:59:41,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41" (1/1) ... [2020-07-20 11:59:41,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41" (1/1) ... [2020-07-20 11:59:41,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41" (1/1) ... [2020-07-20 11:59:41,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:59:41,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:59:41,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:59:41,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:59:41,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:59:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:59:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:59:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:59:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:59:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:59:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:59:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:59:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:59:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:59:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:59:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:59:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:59:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:59:41,834 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:59:41,834 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:59:41,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:59:41 BoogieIcfgContainer [2020-07-20 11:59:41,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:59:41,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:59:41,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:59:41,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:59:41,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:59:41" (1/3) ... [2020-07-20 11:59:41,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107ceaac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:59:41, skipping insertion in model container [2020-07-20 11:59:41,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:41" (2/3) ... [2020-07-20 11:59:41,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107ceaac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:59:41, skipping insertion in model container [2020-07-20 11:59:41,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:59:41" (3/3) ... [2020-07-20 11:59:41,854 INFO L109 eAbstractionObserver]: Analyzing ICFG id_trans.i [2020-07-20 11:59:41,866 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:59:41,878 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:59:41,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:59:41,919 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:59:41,919 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:59:41,919 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:59:41,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:59:41,920 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:59:41,920 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:59:41,920 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:59:41,920 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:59:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-20 11:59:41,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 11:59:41,943 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:41,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:41,944 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:41,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1541464652, now seen corresponding path program 1 times [2020-07-20 11:59:41,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:41,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526088721] [2020-07-20 11:59:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:59:42,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:59:42,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:59:42,142 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:59:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:42,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:59:42,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526088721] [2020-07-20 11:59:42,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:59:42,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:59:42,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633456674] [2020-07-20 11:59:42,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:59:42,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:59:42,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:59:42,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:59:42,201 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-07-20 11:59:42,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:59:42,324 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2020-07-20 11:59:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:59:42,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-20 11:59:42,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:59:42,336 INFO L225 Difference]: With dead ends: 46 [2020-07-20 11:59:42,336 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 11:59:42,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:59:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 11:59:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 11:59:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 11:59:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-07-20 11:59:42,385 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2020-07-20 11:59:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:59:42,386 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-07-20 11:59:42,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:59:42,386 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-07-20 11:59:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:59:42,389 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:42,389 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:42,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:42,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:42,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:42,598 INFO L82 PathProgramCache]: Analyzing trace with hash -621797359, now seen corresponding path program 1 times [2020-07-20 11:59:42,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:42,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034412977] [2020-07-20 11:59:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:59:42,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:59:42,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:59:42,650 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:59:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:42,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:59:42,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034412977] [2020-07-20 11:59:42,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:59:42,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:59:42,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614319695] [2020-07-20 11:59:42,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:59:42,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:59:42,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:59:42,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:59:42,690 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2020-07-20 11:59:42,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:59:42,743 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-07-20 11:59:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:59:42,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-20 11:59:42,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:59:42,745 INFO L225 Difference]: With dead ends: 28 [2020-07-20 11:59:42,745 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 11:59:42,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:59:42,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 11:59:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-20 11:59:42,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-20 11:59:42,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-07-20 11:59:42,755 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2020-07-20 11:59:42,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:59:42,756 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-07-20 11:59:42,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:59:42,756 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-07-20 11:59:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 11:59:42,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:42,758 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:42,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:42,973 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:42,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:42,974 INFO L82 PathProgramCache]: Analyzing trace with hash -561745487, now seen corresponding path program 1 times [2020-07-20 11:59:42,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:42,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908107575] [2020-07-20 11:59:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:59:43,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:59:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:59:43,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:59:43,053 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:59:43,054 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:59:43,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:43,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:59:43 BoogieIcfgContainer [2020-07-20 11:59:43,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:59:43,299 INFO L168 Benchmark]: Toolchain (without parser) took 2258.57 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 115.8 MB in the end (delta: -13.9 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:43,300 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 11:59:43,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.24 ms. Allocated memory is still 145.2 MB. Free memory was 101.6 MB in the beginning and 91.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:43,302 INFO L168 Benchmark]: Boogie Preprocessor took 139.34 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 91.6 MB in the beginning and 181.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:43,303 INFO L168 Benchmark]: RCFGBuilder took 314.18 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 167.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:43,304 INFO L168 Benchmark]: TraceAbstraction took 1454.00 ms. Allocated memory is still 201.9 MB. Free memory was 167.2 MB in the beginning and 115.8 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:43,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.24 ms. Allocated memory is still 145.2 MB. Free memory was 101.6 MB in the beginning and 91.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.34 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 91.6 MB in the beginning and 181.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 314.18 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 167.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1454.00 ms. Allocated memory is still 201.9 MB. Free memory was 167.2 MB in the beginning and 115.8 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 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 VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L20] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L21] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L7] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L21] RET __VERIFIER_assert( 0 <= j) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L22] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L7] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L22] RET __VERIFIER_assert( j < material_length ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L23] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L7] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L23] RET __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L24] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 13 SDslu, 100 SDs, 0 SdLazy, 46 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 19 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 525 SizeOfPredicates, 4 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 8 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...