/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.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 04:00:29,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 04:00:29,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 04:00:29,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 04:00:29,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 04:00:29,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 04:00:29,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 04:00:29,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 04:00:29,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 04:00:29,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 04:00:29,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 04:00:29,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 04:00:29,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 04:00:29,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 04:00:29,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 04:00:29,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 04:00:29,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 04:00:29,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 04:00:29,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 04:00:29,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 04:00:29,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 04:00:29,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 04:00:29,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 04:00:29,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 04:00:29,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 04:00:29,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 04:00:29,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 04:00:29,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 04:00:29,640 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 04:00:29,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 04:00:29,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 04:00:29,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 04:00:29,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 04:00:29,656 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 04:00:29,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 04:00:29,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 04:00:29,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 04:00:29,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 04:00:29,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 04:00:29,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 04:00:29,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 04:00:29,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 04:00:29,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 04:00:29,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 04:00:29,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 04:00:29,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 04:00:29,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 04:00:29,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 04:00:29,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 04:00:29,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 04:00:29,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 04:00:29,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 04:00:29,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 04:00:29,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 04:00:29,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 04:00:29,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 04:00:29,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 04:00:29,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 04:00:29,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 04:00:29,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 04:00:30,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 04:00:30,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 04:00:30,011 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 04:00:30,011 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 04:00:30,012 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-07-20 04:00:30,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59e2a5ea/ba10a624ea1744329a8c401f6dd7f604/FLAG3fa350eef [2020-07-20 04:00:30,535 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 04:00:30,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-07-20 04:00:30,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59e2a5ea/ba10a624ea1744329a8c401f6dd7f604/FLAG3fa350eef [2020-07-20 04:00:30,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59e2a5ea/ba10a624ea1744329a8c401f6dd7f604 [2020-07-20 04:00:30,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 04:00:30,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 04:00:30,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 04:00:30,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 04:00:30,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 04:00:30,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:00:30" (1/1) ... [2020-07-20 04:00:30,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50069867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:30, skipping insertion in model container [2020-07-20 04:00:30,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:00:30" (1/1) ... [2020-07-20 04:00:30,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 04:00:30,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 04:00:31,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:00:31,157 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 04:00:31,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:00:31,190 INFO L208 MainTranslator]: Completed translation [2020-07-20 04:00:31,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:31 WrapperNode [2020-07-20 04:00:31,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 04:00:31,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 04:00:31,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 04:00:31,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 04:00:31,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:31" (1/1) ... [2020-07-20 04:00:31,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:31" (1/1) ... [2020-07-20 04:00:31,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:31" (1/1) ... [2020-07-20 04:00:31,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:31" (1/1) ... [2020-07-20 04:00:31,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:31" (1/1) ... [2020-07-20 04:00:31,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:31" (1/1) ... [2020-07-20 04:00:31,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:31" (1/1) ... [2020-07-20 04:00:31,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 04:00:31,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 04:00:31,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 04:00:31,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 04:00:31,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:31" (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 04:00:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 04:00:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 04:00:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 04:00:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 04:00:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 04:00:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 04:00:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 04:00:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 04:00:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 04:00:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 04:00:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 04:00:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 04:00:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 04:00:31,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 04:00:31,581 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 04:00:31,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:00:31 BoogieIcfgContainer [2020-07-20 04:00:31,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 04:00:31,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 04:00:31,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 04:00:31,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 04:00:31,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:00:30" (1/3) ... [2020-07-20 04:00:31,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3959c35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:00:31, skipping insertion in model container [2020-07-20 04:00:31,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:31" (2/3) ... [2020-07-20 04:00:31,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3959c35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:00:31, skipping insertion in model container [2020-07-20 04:00:31,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:00:31" (3/3) ... [2020-07-20 04:00:31,594 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-07-20 04:00:31,605 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 04:00:31,615 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 04:00:31,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 04:00:31,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 04:00:31,655 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 04:00:31,655 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 04:00:31,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 04:00:31,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 04:00:31,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 04:00:31,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 04:00:31,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 04:00:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 04:00:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 04:00:31,683 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:31,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:00:31,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:31,691 INFO L82 PathProgramCache]: Analyzing trace with hash 826978896, now seen corresponding path program 1 times [2020-07-20 04:00:31,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:31,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670809195] [2020-07-20 04:00:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76509de8 [2020-07-20 04:00:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:31,906 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 04:00:31,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670809195] [2020-07-20 04:00:31,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:00:31,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:00:31,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530189141] [2020-07-20 04:00:31,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:00:31,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:31,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:00:31,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:00:31,940 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-07-20 04:00:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:32,042 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-07-20 04:00:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 04:00:32,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-20 04:00:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:32,056 INFO L225 Difference]: With dead ends: 44 [2020-07-20 04:00:32,056 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 04:00:32,067 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 [2020-07-20 04:00:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 04:00:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-20 04:00:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 04:00:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-07-20 04:00:32,110 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-07-20 04:00:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:32,111 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-07-20 04:00:32,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:00:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-07-20 04:00:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 04:00:32,112 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:32,113 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:00:32,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 04:00:32,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:32,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:32,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1747164342, now seen corresponding path program 1 times [2020-07-20 04:00:32,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:32,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696110810] [2020-07-20 04:00:32,115 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76509de8 [2020-07-20 04:00:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:32,218 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 04:00:32,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696110810] [2020-07-20 04:00:32,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:00:32,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 04:00:32,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842735627] [2020-07-20 04:00:32,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 04:00:32,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:32,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 04:00:32,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:00:32,224 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2020-07-20 04:00:32,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:32,336 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-20 04:00:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 04:00:32,337 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 04:00:32,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:32,340 INFO L225 Difference]: With dead ends: 31 [2020-07-20 04:00:32,340 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 04:00:32,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 04:00:32,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 04:00:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-07-20 04:00:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-20 04:00:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-07-20 04:00:32,357 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2020-07-20 04:00:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:32,357 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-07-20 04:00:32,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 04:00:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-07-20 04:00:32,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 04:00:32,360 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:32,360 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:00:32,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 04:00:32,361 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:32,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:32,362 INFO L82 PathProgramCache]: Analyzing trace with hash -94267114, now seen corresponding path program 1 times [2020-07-20 04:00:32,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:32,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465014758] [2020-07-20 04:00:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76509de8 [2020-07-20 04:00:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 04:00:32,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465014758] [2020-07-20 04:00:32,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225906551] [2020-07-20 04:00:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@d4384b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:00:32,614 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@d4384b issued 4 check-sat command(s) [2020-07-20 04:00:32,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:00:32,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 04:00:32,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:00:32,727 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:00:32,732 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:00:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 04:00:32,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:00:32,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-20 04:00:32,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383706604] [2020-07-20 04:00:32,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 04:00:32,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:32,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 04:00:32,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-20 04:00:32,764 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 11 states. [2020-07-20 04:00:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:32,865 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-07-20 04:00:32,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 04:00:32,866 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-07-20 04:00:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:32,867 INFO L225 Difference]: With dead ends: 39 [2020-07-20 04:00:32,867 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 04:00:32,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-07-20 04:00:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 04:00:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-07-20 04:00:32,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 04:00:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-07-20 04:00:32,882 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 29 [2020-07-20 04:00:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:32,882 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-07-20 04:00:32,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 04:00:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-07-20 04:00:32,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 04:00:32,884 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:32,884 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:00:33,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 04:00:33,089 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:33,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2069363338, now seen corresponding path program 2 times [2020-07-20 04:00:33,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:33,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966620290] [2020-07-20 04:00:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76509de8 [2020-07-20 04:00:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-20 04:00:33,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966620290] [2020-07-20 04:00:33,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954362072] [2020-07-20 04:00:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60e18545 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:00:33,243 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60e18545 issued 4 check-sat command(s) [2020-07-20 04:00:33,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:00:33,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 04:00:33,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:00:33,260 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:00:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-20 04:00:33,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:00:33,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 04:00:33,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242098210] [2020-07-20 04:00:33,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 04:00:33,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:33,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 04:00:33,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 04:00:33,294 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 8 states. [2020-07-20 04:00:33,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:33,345 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-07-20 04:00:33,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 04:00:33,345 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-07-20 04:00:33,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:33,346 INFO L225 Difference]: With dead ends: 36 [2020-07-20 04:00:33,347 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 04:00:33,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-20 04:00:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 04:00:33,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 04:00:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 04:00:33,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 04:00:33,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-07-20 04:00:33,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:33,349 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 04:00:33,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 04:00:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 04:00:33,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 04:00:33,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:00:33,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 04:00:33,633 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 04:00:33,633 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 04:00:33,633 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 04:00:33,633 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 04:00:33,634 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 04:00:33,634 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 04:00:33,634 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:00:33,634 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 04:00:33,634 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:00:33,634 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:00:33,635 INFO L271 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-07-20 04:00:33,635 INFO L268 CegarLoopResult]: For program point L31(lines 27 32) no Hoare annotation was computed. [2020-07-20 04:00:33,635 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0)) [2020-07-20 04:00:33,635 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 34) the Hoare annotation is: true [2020-07-20 04:00:33,635 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0)) [2020-07-20 04:00:33,636 INFO L264 CegarLoopResult]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (<= 1 main_~MAXPATHLEN~0)) [2020-07-20 04:00:33,636 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 34) no Hoare annotation was computed. [2020-07-20 04:00:33,636 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 04:00:33,636 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-07-20 04:00:33,636 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 34) no Hoare annotation was computed. [2020-07-20 04:00:33,636 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 04:00:33,637 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 04:00:33,637 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 04:00:33,637 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 04:00:33,637 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 04:00:33,637 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 04:00:33,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:00:33 BoogieIcfgContainer [2020-07-20 04:00:33,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 04:00:33,659 INFO L168 Benchmark]: Toolchain (without parser) took 2773.60 ms. Allocated memory was 141.0 MB in the beginning and 232.3 MB in the end (delta: 91.2 MB). Free memory was 105.9 MB in the beginning and 154.5 MB in the end (delta: -48.6 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2020-07-20 04:00:33,660 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 04:00:33,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.05 ms. Allocated memory is still 141.0 MB. Free memory was 105.5 MB in the beginning and 96.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-20 04:00:33,662 INFO L168 Benchmark]: Boogie Preprocessor took 44.85 ms. Allocated memory is still 141.0 MB. Free memory was 96.0 MB in the beginning and 94.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 04:00:33,664 INFO L168 Benchmark]: RCFGBuilder took 348.16 ms. Allocated memory was 141.0 MB in the beginning and 201.9 MB in the end (delta: 60.8 MB). Free memory was 94.4 MB in the beginning and 168.2 MB in the end (delta: -73.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 04:00:33,665 INFO L168 Benchmark]: TraceAbstraction took 2070.24 ms. Allocated memory was 201.9 MB in the beginning and 232.3 MB in the end (delta: 30.4 MB). Free memory was 168.2 MB in the beginning and 154.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2020-07-20 04:00:33,669 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.05 ms. Allocated memory is still 141.0 MB. Free memory was 105.5 MB in the beginning and 96.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.85 ms. Allocated memory is still 141.0 MB. Free memory was 96.0 MB in the beginning and 94.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.16 ms. Allocated memory was 141.0 MB in the beginning and 201.9 MB in the end (delta: 60.8 MB). Free memory was 94.4 MB in the beginning and 168.2 MB in the end (delta: -73.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2070.24 ms. Allocated memory was 201.9 MB in the beginning and 232.3 MB in the end (delta: 30.4 MB). Free memory was 168.2 MB in the beginning and 154.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (glob2_pathlim_off <= MAXPATHLEN && 0 <= glob2_p_off) && 1 <= MAXPATHLEN - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 39 SDslu, 221 SDs, 0 SdLazy, 128 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 27 NumberOfFragments, 42 HoareAnnotationTreeSize, 16 FomulaSimplifications, 108 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 9919 SizeOfPredicates, 9 NumberOfNonLiveVariables, 153 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 150/164 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...