/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 BIGGEST_EQUIVALENCE_CLASS --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_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:10:57,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:10:57,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:10:57,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:10:57,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:10:57,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:10:57,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:10:57,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:10:57,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:10:57,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:10:57,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:10:57,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:10:57,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:10:57,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:10:57,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:10:57,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:10:57,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:10:57,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:10:57,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:10:57,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:10:57,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:10:57,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:10:57,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:10:57,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:10:57,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:10:57,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:10:57,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:10:57,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:10:57,169 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 06:10:57,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:10:57,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:10:57,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:10:57,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:10:57,201 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:10:57,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:10:57,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:10:57,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:10:57,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:10:57,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:10:57,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:10:57,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:10:57,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:10:57,203 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:10:57,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:10:57,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:10:57,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:10:57,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:10:57,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:10:57,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:10:57,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:10:57,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:10:57,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:10:57,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:10:57,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:10:57,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:10:57,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:10:57,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:10:57,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:10:57,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 06:10:57,496 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:10:57,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:10:57,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:10:57,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:10:57,514 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:10:57,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-07-20 06:10:57,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c081216/c3935114843347d89b4e3619daaf1773/FLAGc2399a245 [2020-07-20 06:10:58,043 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:10:58,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-07-20 06:10:58,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c081216/c3935114843347d89b4e3619daaf1773/FLAGc2399a245 [2020-07-20 06:10:58,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c081216/c3935114843347d89b4e3619daaf1773 [2020-07-20 06:10:58,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:10:58,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:10:58,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:10:58,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:10:58,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:10:58,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:10:58" (1/1) ... [2020-07-20 06:10:58,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19115b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58, skipping insertion in model container [2020-07-20 06:10:58,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:10:58" (1/1) ... [2020-07-20 06:10:58,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:10:58,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:10:58,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:10:58,662 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:10:58,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:10:58,696 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:10:58,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58 WrapperNode [2020-07-20 06:10:58,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:10:58,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:10:58,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:10:58,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:10:58,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58" (1/1) ... [2020-07-20 06:10:58,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58" (1/1) ... [2020-07-20 06:10:58,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58" (1/1) ... [2020-07-20 06:10:58,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58" (1/1) ... [2020-07-20 06:10:58,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58" (1/1) ... [2020-07-20 06:10:58,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58" (1/1) ... [2020-07-20 06:10:58,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58" (1/1) ... [2020-07-20 06:10:58,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:10:58,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:10:58,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:10:58,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:10:58,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58" (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 06:10:58,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:10:58,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:10:58,880 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:10:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:10:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:10:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:10:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:10:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:10:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:10:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:10:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:10:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:10:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:10:59,149 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:10:59,150 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 06:10:59,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:10:59 BoogieIcfgContainer [2020-07-20 06:10:59,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:10:59,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:10:59,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:10:59,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:10:59,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:10:58" (1/3) ... [2020-07-20 06:10:59,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe9de8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:10:59, skipping insertion in model container [2020-07-20 06:10:59,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:58" (2/3) ... [2020-07-20 06:10:59,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe9de8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:10:59, skipping insertion in model container [2020-07-20 06:10:59,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:10:59" (3/3) ... [2020-07-20 06:10:59,175 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-07-20 06:10:59,183 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:10:59,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:10:59,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:10:59,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:10:59,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:10:59,227 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:10:59,227 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:10:59,227 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:10:59,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:10:59,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:10:59,228 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:10:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-20 06:10:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 06:10:59,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:10:59,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:10:59,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:10:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:10:59,258 INFO L82 PathProgramCache]: Analyzing trace with hash -362650722, now seen corresponding path program 1 times [2020-07-20 06:10:59,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:10:59,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699185314] [2020-07-20 06:10:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@568912df [2020-07-20 06:10:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:59,652 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 06:10:59,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699185314] [2020-07-20 06:10:59,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:10:59,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 06:10:59,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718308414] [2020-07-20 06:10:59,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 06:10:59,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:10:59,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 06:10:59,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:10:59,673 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 7 states. [2020-07-20 06:10:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:10:59,846 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-07-20 06:10:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 06:10:59,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-20 06:10:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:10:59,858 INFO L225 Difference]: With dead ends: 47 [2020-07-20 06:10:59,858 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 06:10:59,862 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 06:10:59,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 06:10:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 06:10:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 06:10:59,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-20 06:10:59,906 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-07-20 06:10:59,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:10:59,906 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-20 06:10:59,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 06:10:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-20 06:10:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 06:10:59,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:10:59,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:10:59,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:10:59,909 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:10:59,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:10:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1126137131, now seen corresponding path program 1 times [2020-07-20 06:10:59,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:10:59,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295599648] [2020-07-20 06:10:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@568912df [2020-07-20 06:10:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:00,105 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 06:11:00,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295599648] [2020-07-20 06:11:00,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170864248] [2020-07-20 06:11:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e338c5d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:11:00,166 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e338c5d issued 4 check-sat command(s) [2020-07-20 06:11:00,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:11:00,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-20 06:11:00,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:11:00,330 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 06:11:00,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:11:00,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-07-20 06:11:00,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418806696] [2020-07-20 06:11:00,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 06:11:00,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:11:00,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 06:11:00,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-07-20 06:11:00,335 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2020-07-20 06:11:00,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:11:00,494 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-20 06:11:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 06:11:00,495 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-07-20 06:11:00,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:11:00,496 INFO L225 Difference]: With dead ends: 18 [2020-07-20 06:11:00,496 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 06:11:00,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-07-20 06:11:00,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 06:11:00,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 06:11:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 06:11:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 06:11:00,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-07-20 06:11:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:11:00,499 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 06:11:00,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 06:11:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 06:11:00,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 06:11:00,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 06:11:00,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 06:11:00,788 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 06:11:00,788 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:11:00,788 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:11:00,788 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 06:11:00,788 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 06:11:00,789 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 06:11:00,789 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:11:00,789 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 06:11:00,789 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:11:00,789 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:11:00,789 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-07-20 06:11:00,789 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2020-07-20 06:11:00,790 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-20 06:11:00,790 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 31) no Hoare annotation was computed. [2020-07-20 06:11:00,790 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: true [2020-07-20 06:11:00,791 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2020-07-20 06:11:00,792 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0 main_~z~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-20 06:11:00,792 INFO L268 CegarLoopResult]: For program point L22-3(lines 13 31) no Hoare annotation was computed. [2020-07-20 06:11:00,798 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-20 06:11:00,799 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 06:11:00,799 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 06:11:00,799 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 06:11:00,799 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 06:11:00,799 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 06:11:00,800 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 06:11:00,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:11:00 BoogieIcfgContainer [2020-07-20 06:11:00,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:11:00,845 INFO L168 Benchmark]: Toolchain (without parser) took 2401.07 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 102.9 MB in the beginning and 171.4 MB in the end (delta: -68.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-07-20 06:11:00,846 INFO L168 Benchmark]: CDTParser took 0.22 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 06:11:00,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.42 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 06:11:00,851 INFO L168 Benchmark]: Boogie Preprocessor took 115.65 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.9 MB in the beginning and 181.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-20 06:11:00,852 INFO L168 Benchmark]: RCFGBuilder took 346.91 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 167.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-07-20 06:11:00,853 INFO L168 Benchmark]: TraceAbstraction took 1669.97 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 167.2 MB in the beginning and 171.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:11:00,862 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 254.42 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.65 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.9 MB in the beginning and 181.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.91 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 167.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1669.97 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 167.2 MB in the beginning and 171.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 28.9 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: 22]: Loop Invariant Derived loop invariant: x + j <= i + y + z && i + y + z <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 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: 31 SDtfs, 25 SDslu, 131 SDs, 0 SdLazy, 95 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 33 HoareAnnotationTreeSize, 10 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 77 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 3025 SizeOfPredicates, 5 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 19 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...