/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_VARIABLES --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.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:52:24,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:52:24,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:52:24,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:52:24,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:52:24,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:52:24,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:52:24,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:52:24,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:52:24,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:52:24,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:52:24,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:52:24,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:52:24,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:52:24,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:52:24,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:52:24,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:52:24,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:52:24,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:52:24,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:52:24,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:52:24,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:52:24,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:52:24,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:52:24,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:52:24,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:52:24,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:52:24,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:52:24,602 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 01:52:24,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:52:24,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:52:24,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:52:24,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:52:24,635 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:52:24,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:52:24,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:52:24,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:52:24,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:52:24,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:52:24,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:52:24,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:52:24,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:52:24,637 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:52:24,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:52:24,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:52:24,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:52:24,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:52:24,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:52:24,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:52:24,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:52:24,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:52:24,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:52:24,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:52:24,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:52:24,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:52:24,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:52:24,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:52:24,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:52:24,641 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_VARIABLES 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 01:52:24,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:52:24,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:52:24,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:52:24,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:52:24,933 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:52:24,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-07-20 01:52:24,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b561747/d866d4420f0a45d699ffc7b061fbb74e/FLAG91eb54f21 [2020-07-20 01:52:25,455 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:52:25,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2020-07-20 01:52:25,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b561747/d866d4420f0a45d699ffc7b061fbb74e/FLAG91eb54f21 [2020-07-20 01:52:25,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b561747/d866d4420f0a45d699ffc7b061fbb74e [2020-07-20 01:52:25,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:52:25,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:52:25,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:52:25,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:52:25,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:52:25,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:52:25" (1/1) ... [2020-07-20 01:52:25,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@583a59fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:25, skipping insertion in model container [2020-07-20 01:52:25,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:52:25" (1/1) ... [2020-07-20 01:52:25,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:52:25,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:52:26,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:52:26,073 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:52:26,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:52:26,113 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:52:26,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:26 WrapperNode [2020-07-20 01:52:26,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:52:26,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:52:26,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:52:26,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:52:26,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:26" (1/1) ... [2020-07-20 01:52:26,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:26" (1/1) ... [2020-07-20 01:52:26,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:26" (1/1) ... [2020-07-20 01:52:26,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:26" (1/1) ... [2020-07-20 01:52:26,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:26" (1/1) ... [2020-07-20 01:52:26,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:26" (1/1) ... [2020-07-20 01:52:26,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:26" (1/1) ... [2020-07-20 01:52:26,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:52:26,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:52:26,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:52:26,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:52:26,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:26" (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 01:52:26,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:52:26,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:52:26,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:52:26,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:52:26,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:52:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:52:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:52:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:52:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:52:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:52:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:52:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:52:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:52:26,513 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:52:26,514 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 01:52:26,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:52:26 BoogieIcfgContainer [2020-07-20 01:52:26,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:52:26,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:52:26,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:52:26,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:52:26,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:52:25" (1/3) ... [2020-07-20 01:52:26,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8d3484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:52:26, skipping insertion in model container [2020-07-20 01:52:26,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:26" (2/3) ... [2020-07-20 01:52:26,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8d3484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:52:26, skipping insertion in model container [2020-07-20 01:52:26,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:52:26" (3/3) ... [2020-07-20 01:52:26,555 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-07-20 01:52:26,571 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:52:26,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:52:26,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:52:26,634 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:52:26,634 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:52:26,634 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:52:26,634 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:52:26,634 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:52:26,635 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:52:26,635 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:52:26,635 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:52:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 01:52:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 01:52:26,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:52:26,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:52:26,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:52:26,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:52:26,665 INFO L82 PathProgramCache]: Analyzing trace with hash -42161200, now seen corresponding path program 1 times [2020-07-20 01:52:26,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:52:26,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768994942] [2020-07-20 01:52:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@15f9ff0b [2020-07-20 01:52:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:27,018 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 01:52:27,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768994942] [2020-07-20 01:52:27,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:52:27,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 01:52:27,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514931175] [2020-07-20 01:52:27,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 01:52:27,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:52:27,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 01:52:27,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:52:27,044 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 7 states. [2020-07-20 01:52:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:52:27,202 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-07-20 01:52:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:52:27,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-07-20 01:52:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:52:27,214 INFO L225 Difference]: With dead ends: 46 [2020-07-20 01:52:27,215 INFO L226 Difference]: Without dead ends: 14 [2020-07-20 01:52:27,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:52:27,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-20 01:52:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-20 01:52:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-20 01:52:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-20 01:52:27,263 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-20 01:52:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:52:27,264 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-20 01:52:27,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 01:52:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-20 01:52:27,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 01:52:27,266 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:52:27,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:52:27,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:52:27,267 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:52:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:52:27,268 INFO L82 PathProgramCache]: Analyzing trace with hash 219103455, now seen corresponding path program 1 times [2020-07-20 01:52:27,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:52:27,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453817544] [2020-07-20 01:52:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@15f9ff0b [2020-07-20 01:52:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:27,470 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 01:52:27,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453817544] [2020-07-20 01:52:27,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056209479] [2020-07-20 01:52:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5902b221 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:52:27,519 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5902b221 issued 3 check-sat command(s) [2020-07-20 01:52:27,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:52:27,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 01:52:27,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:52:27,621 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:52:27,681 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 01:52:27,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:52:27,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-20 01:52:27,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982651228] [2020-07-20 01:52:27,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 01:52:27,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:52:27,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 01:52:27,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:52:27,686 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2020-07-20 01:52:27,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:52:27,829 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-20 01:52:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 01:52:27,830 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2020-07-20 01:52:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:52:27,830 INFO L225 Difference]: With dead ends: 17 [2020-07-20 01:52:27,830 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:52:27,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-07-20 01:52:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:52:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:52:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:52:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:52:27,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-20 01:52:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:52:27,834 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:52:27,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 01:52:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:52:27,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:52:28,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 01:52:28,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:52:28,107 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 01:52:28,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:52:28,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:52:28,107 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:52:28,108 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:52:28,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:52:28,108 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:52:28,108 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 01:52:28,108 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:52:28,108 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:52:28,109 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 28) the Hoare annotation is: true [2020-07-20 01:52:28,109 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= main_~y~0 0) (< 0 (+ main_~y~0 1))) [2020-07-20 01:52:28,109 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 28) no Hoare annotation was computed. [2020-07-20 01:52:28,109 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-07-20 01:52:28,109 INFO L264 CegarLoopResult]: At program point L20-2(lines 20 23) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-20 01:52:28,110 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-20 01:52:28,110 INFO L268 CegarLoopResult]: For program point L20-3(lines 13 28) no Hoare annotation was computed. [2020-07-20 01:52:28,110 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 28) no Hoare annotation was computed. [2020-07-20 01:52:28,110 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 01:52:28,110 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 01:52:28,110 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 01:52:28,110 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 01:52:28,111 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 01:52:28,111 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 01:52:28,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:52:28 BoogieIcfgContainer [2020-07-20 01:52:28,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:52:28,137 INFO L168 Benchmark]: Toolchain (without parser) took 2298.57 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 104.8 MB in the beginning and 178.5 MB in the end (delta: -73.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:52:28,139 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 01:52:28,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.59 ms. Allocated memory is still 139.5 MB. Free memory was 104.6 MB in the beginning and 94.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:52:28,142 INFO L168 Benchmark]: Boogie Preprocessor took 30.70 ms. Allocated memory is still 139.5 MB. Free memory was 94.8 MB in the beginning and 93.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:52:28,144 INFO L168 Benchmark]: RCFGBuilder took 374.81 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 93.3 MB in the beginning and 169.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:52:28,146 INFO L168 Benchmark]: TraceAbstraction took 1609.81 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 168.9 MB in the beginning and 178.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:52:28,157 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 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.59 ms. Allocated memory is still 139.5 MB. Free memory was 104.6 MB in the beginning and 94.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.70 ms. Allocated memory is still 139.5 MB. Free memory was 94.8 MB in the beginning and 93.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.81 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 93.3 MB in the beginning and 169.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1609.81 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 168.9 MB in the beginning and 178.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 21.9 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: 20]: Loop Invariant Derived loop invariant: x + j <= i + y && i + y <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 25 SDslu, 123 SDs, 0 SdLazy, 85 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 10 PreInvPairs, 15 NumberOfFragments, 29 HoareAnnotationTreeSize, 10 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 2343 SizeOfPredicates, 5 NumberOfNonLiveVariables, 41 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...