/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-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 04:02:18,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 04:02:18,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 04:02:18,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 04:02:18,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 04:02:18,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 04:02:18,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 04:02:18,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 04:02:18,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 04:02:18,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 04:02:18,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 04:02:18,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 04:02:18,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 04:02:18,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 04:02:18,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 04:02:18,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 04:02:18,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 04:02:18,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 04:02:18,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 04:02:18,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 04:02:18,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 04:02:18,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 04:02:18,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 04:02:18,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 04:02:18,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 04:02:18,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 04:02:18,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 04:02:18,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 04:02:18,645 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 04:02:18,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 04:02:18,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 04:02:18,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 04:02:18,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 04:02:18,662 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 04:02:18,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 04:02:18,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 04:02:18,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 04:02:18,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 04:02:18,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 04:02:18,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 04:02:18,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 04:02:18,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 04:02:18,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 04:02:18,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 04:02:18,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 04:02:18,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 04:02:18,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 04:02:18,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 04:02:18,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 04:02:18,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 04:02:18,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 04:02:18,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 04:02:18,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 04:02:18,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 04:02:18,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 04:02:18,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 04:02:18,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 04:02:18,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 04:02:18,669 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 04:02:18,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 04:02:19,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 04:02:19,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 04:02:19,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 04:02:19,013 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 04:02:19,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-07-20 04:02:19,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d71cc18/99ab0a7195be4d9190ac582250c4164e/FLAG85ac4de10 [2020-07-20 04:02:19,609 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 04:02:19,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-07-20 04:02:19,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d71cc18/99ab0a7195be4d9190ac582250c4164e/FLAG85ac4de10 [2020-07-20 04:02:19,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d71cc18/99ab0a7195be4d9190ac582250c4164e [2020-07-20 04:02:19,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 04:02:19,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 04:02:19,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 04:02:19,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 04:02:19,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 04:02:19,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:02:19" (1/1) ... [2020-07-20 04:02:19,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b31d18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:19, skipping insertion in model container [2020-07-20 04:02:19,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:02:19" (1/1) ... [2020-07-20 04:02:19,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 04:02:20,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 04:02:20,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:02:20,273 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 04:02:20,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:02:20,319 INFO L208 MainTranslator]: Completed translation [2020-07-20 04:02:20,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:20 WrapperNode [2020-07-20 04:02:20,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 04:02:20,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 04:02:20,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 04:02:20,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 04:02:20,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:20" (1/1) ... [2020-07-20 04:02:20,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:20" (1/1) ... [2020-07-20 04:02:20,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:20" (1/1) ... [2020-07-20 04:02:20,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:20" (1/1) ... [2020-07-20 04:02:20,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:20" (1/1) ... [2020-07-20 04:02:20,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:20" (1/1) ... [2020-07-20 04:02:20,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:20" (1/1) ... [2020-07-20 04:02:20,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 04:02:20,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 04:02:20,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 04:02:20,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 04:02:20,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:20" (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 04:02:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 04:02:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 04:02:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 04:02:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 04:02:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 04:02:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 04:02:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 04:02:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 04:02:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 04:02:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 04:02:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 04:02:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 04:02:20,788 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 04:02:20,788 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 04:02:20,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:02:20 BoogieIcfgContainer [2020-07-20 04:02:20,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 04:02:20,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 04:02:20,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 04:02:20,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 04:02:20,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:02:19" (1/3) ... [2020-07-20 04:02:20,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d08c9a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:02:20, skipping insertion in model container [2020-07-20 04:02:20,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:02:20" (2/3) ... [2020-07-20 04:02:20,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d08c9a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:02:20, skipping insertion in model container [2020-07-20 04:02:20,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:02:20" (3/3) ... [2020-07-20 04:02:20,803 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-07-20 04:02:20,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 04:02:20,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 04:02:20,831 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 04:02:20,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 04:02:20,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 04:02:20,861 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 04:02:20,861 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 04:02:20,861 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 04:02:20,862 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 04:02:20,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 04:02:20,862 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 04:02:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-20 04:02:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 04:02:20,888 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:20,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:20,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:20,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1434042835, now seen corresponding path program 1 times [2020-07-20 04:02:20,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:20,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822558211] [2020-07-20 04:02:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c41be41 [2020-07-20 04:02:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:21,235 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2020-07-20 04:02:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:21,357 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 04:02:21,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822558211] [2020-07-20 04:02:21,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:02:21,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 04:02:21,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348023625] [2020-07-20 04:02:21,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 04:02:21,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:21,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 04:02:21,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:02:21,383 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-20 04:02:21,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:21,675 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-07-20 04:02:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 04:02:21,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-07-20 04:02:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:21,690 INFO L225 Difference]: With dead ends: 32 [2020-07-20 04:02:21,690 INFO L226 Difference]: Without dead ends: 14 [2020-07-20 04:02:21,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-20 04:02:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-20 04:02:21,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-20 04:02:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-20 04:02:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-20 04:02:21,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-20 04:02:21,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:21,747 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-20 04:02:21,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 04:02:21,747 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-20 04:02:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 04:02:21,748 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:02:21,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:02:21,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 04:02:21,749 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:02:21,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:02:21,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1507594220, now seen corresponding path program 1 times [2020-07-20 04:02:21,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:02:21,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453817544] [2020-07-20 04:02:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c41be41 [2020-07-20 04:02:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:02:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:02:21,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453817544] [2020-07-20 04:02:21,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056209479] [2020-07-20 04:02:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5902b221 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:02:21,957 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5902b221 issued 3 check-sat command(s) [2020-07-20 04:02:21,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:02:21,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 04:02:21,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:02:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:02:22,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:02:22,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-07-20 04:02:22,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457062968] [2020-07-20 04:02:22,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 04:02:22,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:02:22,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 04:02:22,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-07-20 04:02:22,096 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2020-07-20 04:02:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:02:22,279 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-20 04:02:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 04:02:22,280 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-07-20 04:02:22,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:02:22,280 INFO L225 Difference]: With dead ends: 17 [2020-07-20 04:02:22,281 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 04:02:22,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-07-20 04:02:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 04:02:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 04:02:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 04:02:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 04:02:22,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-20 04:02:22,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:02:22,283 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 04:02:22,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 04:02:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 04:02:22,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 04:02:22,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 04:02:22,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 04:02:22,572 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 04:02:22,572 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|)) [2020-07-20 04:02:22,573 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 04:02:22,573 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 04:02:22,573 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 04:02:22,573 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 04:02:22,573 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 04:02:22,574 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-20 04:02:22,574 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 04:02:22,574 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-20 04:02:22,574 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-20 04:02:22,575 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 51) no Hoare annotation was computed. [2020-07-20 04:02:22,576 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 68) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-20 04:02:22,576 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 68) no Hoare annotation was computed. [2020-07-20 04:02:22,576 INFO L268 CegarLoopResult]: For program point L23(lines 23 66) no Hoare annotation was computed. [2020-07-20 04:02:22,576 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-07-20 04:02:22,576 INFO L268 CegarLoopResult]: For program point L17(lines 17 67) no Hoare annotation was computed. [2020-07-20 04:02:22,576 INFO L268 CegarLoopResult]: For program point L49(lines 49 58) no Hoare annotation was computed. [2020-07-20 04:02:22,577 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 68) no Hoare annotation was computed. [2020-07-20 04:02:22,577 INFO L268 CegarLoopResult]: For program point L42(lines 42 64) no Hoare annotation was computed. [2020-07-20 04:02:22,577 INFO L264 CegarLoopResult]: At program point L38(lines 28 66) the Hoare annotation is: (let ((.cse1 (+ main_~main__y~0 main_~main__i~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-20 04:02:22,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:02:22 BoogieIcfgContainer [2020-07-20 04:02:22,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 04:02:22,604 INFO L168 Benchmark]: Toolchain (without parser) took 2643.17 ms. Allocated memory was 138.9 MB in the beginning and 235.9 MB in the end (delta: 97.0 MB). Free memory was 103.5 MB in the beginning and 164.2 MB in the end (delta: -60.6 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-07-20 04:02:22,606 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 04:02:22,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.11 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 93.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-20 04:02:22,609 INFO L168 Benchmark]: Boogie Preprocessor took 133.99 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.5 MB in the beginning and 182.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-20 04:02:22,610 INFO L168 Benchmark]: RCFGBuilder took 338.08 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 168.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-07-20 04:02:22,612 INFO L168 Benchmark]: TraceAbstraction took 1804.82 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 168.2 MB in the beginning and 164.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2020-07-20 04:02:22,624 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 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.11 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 93.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.99 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.5 MB in the beginning and 182.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.08 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 168.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1804.82 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 168.2 MB in the beginning and 164.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: 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: 28]: Loop Invariant Derived loop invariant: (main__j + main__x <= main__y + main__i && main__y + main__i <= main__j + main__x) && \old(__return_72) == __return_72 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 42 SDslu, 60 SDs, 0 SdLazy, 82 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 30 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 62 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 2108 SizeOfPredicates, 6 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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 correct! Received shutdown request...