/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 NUM_FUNCTIONS --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/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:20:11,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:20:11,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:20:11,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:20:11,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:20:11,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:20:11,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:20:11,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:20:11,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:20:11,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:20:11,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:20:11,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:20:11,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:20:11,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:20:11,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:20:11,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:20:11,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:20:11,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:20:11,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:20:11,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:20:11,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:20:11,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:20:11,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:20:11,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:20:11,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:20:11,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:20:11,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:20:11,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:20:11,239 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 [2020-07-19 23:20:11,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:20:11,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:20:11,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:20:11,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:20:11,255 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:20:11,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:20:11,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:20:11,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:20:11,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:20:11,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:20:11,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:20:11,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:20:11,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:20:11,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:20:11,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:20:11,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:20:11,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:20:11,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:20:11,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:20:11,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:20:11,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:20:11,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:20:11,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:20:11,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:20:11,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:20:11,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:20:11,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:20:11,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:20:11,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:20:11,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 [2020-07-19 23:20:11,531 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:20:11,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:20:11,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:20:11,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:20:11,549 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:20:11,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-07-19 23:20:11,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3852cafd1/80b2f7cd9d1a4ab1a42a7859252781b6/FLAG8b84e3a65 [2020-07-19 23:20:12,027 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:20:12,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-07-19 23:20:12,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3852cafd1/80b2f7cd9d1a4ab1a42a7859252781b6/FLAG8b84e3a65 [2020-07-19 23:20:12,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3852cafd1/80b2f7cd9d1a4ab1a42a7859252781b6 [2020-07-19 23:20:12,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:20:12,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:20:12,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:20:12,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:20:12,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:20:12,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:20:12" (1/1) ... [2020-07-19 23:20:12,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecd2007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12, skipping insertion in model container [2020-07-19 23:20:12,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:20:12" (1/1) ... [2020-07-19 23:20:12,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:20:12,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:20:12,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:20:12,631 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:20:12,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:20:12,654 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:20:12,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12 WrapperNode [2020-07-19 23:20:12,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:20:12,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:20:12,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:20:12,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:20:12,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12" (1/1) ... [2020-07-19 23:20:12,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12" (1/1) ... [2020-07-19 23:20:12,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12" (1/1) ... [2020-07-19 23:20:12,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12" (1/1) ... [2020-07-19 23:20:12,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12" (1/1) ... [2020-07-19 23:20:12,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12" (1/1) ... [2020-07-19 23:20:12,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12" (1/1) ... [2020-07-19 23:20:12,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:20:12,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:20:12,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:20:12,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:20:12,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12" (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 [2020-07-19 23:20:12,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:20:12,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:20:12,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-19 23:20:12,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:20:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:20:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-19 23:20:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:20:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:20:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:20:12,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:20:12,983 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-19 23:20:12,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:20:12 BoogieIcfgContainer [2020-07-19 23:20:12,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:20:12,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:20:12,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:20:12,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:20:12,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:20:12" (1/3) ... [2020-07-19 23:20:12,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394619e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:20:12, skipping insertion in model container [2020-07-19 23:20:12,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:12" (2/3) ... [2020-07-19 23:20:12,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394619e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:20:12, skipping insertion in model container [2020-07-19 23:20:12,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:20:12" (3/3) ... [2020-07-19 23:20:12,996 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2020-07-19 23:20:13,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:20:13,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:20:13,029 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:20:13,064 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:20:13,064 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:20:13,064 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:20:13,065 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:20:13,065 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:20:13,065 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:20:13,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:20:13,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:20:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-19 23:20:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-19 23:20:13,088 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:20:13,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:20:13,089 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:20:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:20:13,095 INFO L82 PathProgramCache]: Analyzing trace with hash -417355086, now seen corresponding path program 1 times [2020-07-19 23:20:13,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:20:13,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716750498] [2020-07-19 23:20:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20f0b7f7 [2020-07-19 23:20:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:20:13,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716750498] [2020-07-19 23:20:13,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:20:13,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 23:20:13,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822010328] [2020-07-19 23:20:13,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:20:13,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:20:13,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:20:13,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:20:13,251 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-07-19 23:20:13,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:20:13,290 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-07-19 23:20:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:20:13,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-19 23:20:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:20:13,305 INFO L225 Difference]: With dead ends: 29 [2020-07-19 23:20:13,305 INFO L226 Difference]: Without dead ends: 11 [2020-07-19 23:20:13,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:20:13,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-07-19 23:20:13,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-07-19 23:20:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-19 23:20:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-07-19 23:20:13,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-07-19 23:20:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:20:13,407 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-07-19 23:20:13,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:20:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-07-19 23:20:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 23:20:13,408 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:20:13,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:20:13,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:20:13,409 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:20:13,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:20:13,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1648524013, now seen corresponding path program 1 times [2020-07-19 23:20:13,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:20:13,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274001794] [2020-07-19 23:20:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20f0b7f7 [2020-07-19 23:20:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:20:13,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274001794] [2020-07-19 23:20:13,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:20:13,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:20:13,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780446643] [2020-07-19 23:20:13,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:20:13,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:20:13,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:20:13,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:20:13,507 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 4 states. [2020-07-19 23:20:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:20:13,538 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-07-19 23:20:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:20:13,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-19 23:20:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:20:13,539 INFO L225 Difference]: With dead ends: 11 [2020-07-19 23:20:13,539 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:20:13,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:20:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:20:13,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:20:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:20:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:20:13,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-19 23:20:13,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:20:13,543 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:20:13,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:20:13,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:20:13,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:20:13,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:20:13,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:20:13,575 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 23:20:13,576 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:20:13,576 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-19 23:20:13,576 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-19 23:20:13,576 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-19 23:20:13,577 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-19 23:20:13,577 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:20:13,577 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:20:13,578 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:20:13,578 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:20:13,578 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-07-19 23:20:13,578 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2020-07-19 23:20:13,579 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-19 23:20:13,579 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-19 23:20:13,579 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: false [2020-07-19 23:20:13,579 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-07-19 23:20:13,579 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: false [2020-07-19 23:20:13,580 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-07-19 23:20:13,580 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 20) no Hoare annotation was computed. [2020-07-19 23:20:13,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:20:13 BoogieIcfgContainer [2020-07-19 23:20:13,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:20:13,590 INFO L168 Benchmark]: Toolchain (without parser) took 1147.74 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 102.9 MB in the beginning and 140.8 MB in the end (delta: -37.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:20:13,591 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 23:20:13,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.65 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 93.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:20:13,594 INFO L168 Benchmark]: Boogie Preprocessor took 25.69 ms. Allocated memory is still 138.4 MB. Free memory was 93.5 MB in the beginning and 92.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-19 23:20:13,595 INFO L168 Benchmark]: RCFGBuilder took 305.14 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 92.2 MB in the beginning and 173.8 MB in the end (delta: -81.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-19 23:20:13,596 INFO L168 Benchmark]: TraceAbstraction took 599.69 ms. Allocated memory is still 203.9 MB. Free memory was 173.1 MB in the beginning and 140.8 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-07-19 23:20:13,601 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 210.65 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 93.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.69 ms. Allocated memory is still 138.4 MB. Free memory was 93.5 MB in the beginning and 92.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 305.14 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 92.2 MB in the beginning and 173.8 MB in the end (delta: -81.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 599.69 ms. Allocated memory is still 203.9 MB. Free memory was 173.1 MB in the beginning and 140.8 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, 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: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...