/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/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:11:05,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:11:05,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:11:05,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:11:05,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:11:05,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:11:05,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:11:05,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:11:05,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:11:05,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:11:05,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:11:05,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:11:05,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:11:05,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:11:05,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:11:05,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:11:05,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:11:05,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:11:05,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:11:05,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:11:05,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:11:05,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:11:05,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:11:05,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:11:05,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:11:05,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:11:05,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:11:05,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:11:05,701 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 01:11:05,716 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:11:05,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:11:05,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:11:05,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:11:05,718 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:11:05,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:11:05,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:11:05,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:11:05,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:11:05,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:11:05,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:11:05,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:11:05,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:11:05,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:11:05,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:11:05,720 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:11:05,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:11:05,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:11:05,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:11:05,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:11:05,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:11:05,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:11:05,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:11:05,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:11:05,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:11:05,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:11:05,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:11:05,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:11:05,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:11:05,723 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 01:11:06,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:11:06,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:11:06,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:11:06,049 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:11:06,051 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:11:06,052 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-07-20 01:11:06,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd535671b/0999cb83922546ef9abdb3c9d2fbe590/FLAGded927ce0 [2020-07-20 01:11:06,640 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:11:06,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c [2020-07-20 01:11:06,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd535671b/0999cb83922546ef9abdb3c9d2fbe590/FLAGded927ce0 [2020-07-20 01:11:07,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd535671b/0999cb83922546ef9abdb3c9d2fbe590 [2020-07-20 01:11:07,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:11:07,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:11:07,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:11:07,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:11:07,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:11:07,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:11:07" (1/1) ... [2020-07-20 01:11:07,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8f135f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07, skipping insertion in model container [2020-07-20 01:11:07,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:11:07" (1/1) ... [2020-07-20 01:11:07,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:11:07,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:11:07,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:11:07,413 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:11:07,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:11:07,451 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:11:07,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07 WrapperNode [2020-07-20 01:11:07,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:11:07,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:11:07,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:11:07,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:11:07,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07" (1/1) ... [2020-07-20 01:11:07,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07" (1/1) ... [2020-07-20 01:11:07,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07" (1/1) ... [2020-07-20 01:11:07,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07" (1/1) ... [2020-07-20 01:11:07,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07" (1/1) ... [2020-07-20 01:11:07,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07" (1/1) ... [2020-07-20 01:11:07,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07" (1/1) ... [2020-07-20 01:11:07,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:11:07,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:11:07,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:11:07,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:11:07,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07" (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 01:11:07,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:11:07,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:11:07,664 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-20 01:11:07,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:11:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:11:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:11:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-20 01:11:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:11:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:11:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:11:07,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:11:07,857 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 01:11:07,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:11:07 BoogieIcfgContainer [2020-07-20 01:11:07,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:11:07,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:11:07,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:11:07,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:11:07,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:11:07" (1/3) ... [2020-07-20 01:11:07,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3d932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:11:07, skipping insertion in model container [2020-07-20 01:11:07,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:11:07" (2/3) ... [2020-07-20 01:11:07,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3d932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:11:07, skipping insertion in model container [2020-07-20 01:11:07,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:11:07" (3/3) ... [2020-07-20 01:11:07,890 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-07-20 01:11:07,925 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:11:07,943 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:11:07,972 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:11:07,999 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:11:08,000 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:11:08,000 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:11:08,000 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:11:08,000 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:11:08,000 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:11:08,001 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:11:08,001 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:11:08,018 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-20 01:11:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 01:11:08,025 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:08,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:08,026 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:08,033 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2020-07-20 01:11:08,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:08,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499682710] [2020-07-20 01:11:08,042 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e5feb37 [2020-07-20 01:11:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:08,358 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 01:11:08,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499682710] [2020-07-20 01:11:08,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:11:08,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 01:11:08,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439357922] [2020-07-20 01:11:08,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 01:11:08,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:08,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 01:11:08,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:11:08,389 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-07-20 01:11:08,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:08,546 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-07-20 01:11:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:11:08,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-20 01:11:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:08,559 INFO L225 Difference]: With dead ends: 38 [2020-07-20 01:11:08,559 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 01:11:08,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:11:08,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 01:11:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-20 01:11:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 01:11:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-07-20 01:11:08,623 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-07-20 01:11:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:08,624 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-07-20 01:11:08,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 01:11:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-20 01:11:08,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 01:11:08,631 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:08,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:08,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:11:08,632 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:08,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2020-07-20 01:11:08,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:08,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393877125] [2020-07-20 01:11:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e5feb37 [2020-07-20 01:11:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:08,730 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 01:11:08,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393877125] [2020-07-20 01:11:08,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:11:08,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:11:08,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54679867] [2020-07-20 01:11:08,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:11:08,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:08,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:11:08,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:11:08,734 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2020-07-20 01:11:08,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:08,767 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-07-20 01:11:08,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:11:08,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-20 01:11:08,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:08,769 INFO L225 Difference]: With dead ends: 34 [2020-07-20 01:11:08,770 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 01:11:08,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:11:08,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 01:11:08,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-20 01:11:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 01:11:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-20 01:11:08,780 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2020-07-20 01:11:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:08,780 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-20 01:11:08,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:11:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-20 01:11:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 01:11:08,782 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:08,782 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:08,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:11:08,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:08,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:08,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2020-07-20 01:11:08,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:08,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016969831] [2020-07-20 01:11:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e5feb37 [2020-07-20 01:11:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:11:09,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016969831] [2020-07-20 01:11:09,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159516351] [2020-07-20 01:11:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@e4ac675 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 01:11:09,132 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@e4ac675 issued 4 check-sat command(s) [2020-07-20 01:11:09,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:09,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 01:11:09,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 01:11:09,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:09,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2020-07-20 01:11:09,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760388639] [2020-07-20 01:11:09,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 01:11:09,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:09,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 01:11:09,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-07-20 01:11:09,374 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 15 states. [2020-07-20 01:11:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:09,645 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-07-20 01:11:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 01:11:09,646 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-07-20 01:11:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:09,647 INFO L225 Difference]: With dead ends: 38 [2020-07-20 01:11:09,648 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 01:11:09,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-07-20 01:11:09,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 01:11:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-07-20 01:11:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 01:11:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-07-20 01:11:09,656 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2020-07-20 01:11:09,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:09,657 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-07-20 01:11:09,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 01:11:09,657 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-20 01:11:09,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 01:11:09,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:09,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:09,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 01:11:09,873 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:09,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1365148867, now seen corresponding path program 1 times [2020-07-20 01:11:09,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:09,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150073369] [2020-07-20 01:11:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e5feb37 [2020-07-20 01:11:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 01:11:09,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150073369] [2020-07-20 01:11:09,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542157079] [2020-07-20 01:11:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@dc82572 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:09,964 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@dc82572 issued 2 check-sat command(s) [2020-07-20 01:11:09,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:09,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 01:11:09,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:11:09,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:11:09,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 7 [2020-07-20 01:11:09,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141965578] [2020-07-20 01:11:09,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 01:11:09,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:09,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 01:11:09,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:11:09,993 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 6 states. [2020-07-20 01:11:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:10,070 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-07-20 01:11:10,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:11:10,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-20 01:11:10,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:10,072 INFO L225 Difference]: With dead ends: 36 [2020-07-20 01:11:10,072 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 01:11:10,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:11:10,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 01:11:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-07-20 01:11:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 01:11:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-07-20 01:11:10,081 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 23 [2020-07-20 01:11:10,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:10,081 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-07-20 01:11:10,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 01:11:10,081 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-07-20 01:11:10,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 01:11:10,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:11:10,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:11:10,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:10,298 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:11:10,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:11:10,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1459427924, now seen corresponding path program 1 times [2020-07-20 01:11:10,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:11:10,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447755506] [2020-07-20 01:11:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e5feb37 [2020-07-20 01:11:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:11:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 01:11:10,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447755506] [2020-07-20 01:11:10,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067689679] [2020-07-20 01:11:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77a87d83 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:10,407 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77a87d83 issued 2 check-sat command(s) [2020-07-20 01:11:10,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:11:10,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 01:11:10,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:11:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 01:11:10,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:11:10,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-20 01:11:10,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478125442] [2020-07-20 01:11:10,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:11:10,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:11:10,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:11:10,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:11:10,440 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 8 states. [2020-07-20 01:11:10,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:11:10,560 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-07-20 01:11:10,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:11:10,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-07-20 01:11:10,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:11:10,562 INFO L225 Difference]: With dead ends: 35 [2020-07-20 01:11:10,562 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:11:10,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:11:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:11:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:11:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:11:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:11:10,564 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-07-20 01:11:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:11:10,564 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:11:10,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:11:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:11:10,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:11:10,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:11:10,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:11:10,870 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 01:11:10,871 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:11:10,871 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:11:10,871 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:11:10,871 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:11:10,871 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:11:10,871 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-07-20 01:11:10,872 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-07-20 01:11:10,872 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-07-20 01:11:10,872 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 45) no Hoare annotation was computed. [2020-07-20 01:11:10,872 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 45) no Hoare annotation was computed. [2020-07-20 01:11:10,872 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 01:11:10,872 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-07-20 01:11:10,873 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2020-07-20 01:11:10,873 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-07-20 01:11:10,873 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-07-20 01:11:10,873 INFO L268 CegarLoopResult]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2020-07-20 01:11:10,873 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (<= addition_~n 0) (= |addition_#in~m| addition_~m) (not (= 0 addition_~n))) [2020-07-20 01:11:10,874 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-07-20 01:11:10,874 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-07-20 01:11:10,874 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (< 0 addition_~n)) [2020-07-20 01:11:10,874 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-07-20 01:11:10,874 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-07-20 01:11:10,874 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-07-20 01:11:10,874 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-07-20 01:11:10,875 INFO L268 CegarLoopResult]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2020-07-20 01:11:10,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:11:10 BoogieIcfgContainer [2020-07-20 01:11:10,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:11:10,887 INFO L168 Benchmark]: Toolchain (without parser) took 3840.14 ms. Allocated memory was 142.6 MB in the beginning and 228.6 MB in the end (delta: 86.0 MB). Free memory was 100.2 MB in the beginning and 79.2 MB in the end (delta: 20.9 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:11:10,888 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory is still 118.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 01:11:10,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.43 ms. Allocated memory is still 142.6 MB. Free memory was 99.3 MB in the beginning and 89.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-20 01:11:10,893 INFO L168 Benchmark]: Boogie Preprocessor took 151.43 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 89.8 MB in the beginning and 178.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:11:10,894 INFO L168 Benchmark]: RCFGBuilder took 262.68 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 165.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:11:10,895 INFO L168 Benchmark]: TraceAbstraction took 3011.69 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 164.8 MB in the beginning and 79.2 MB in the end (delta: 85.6 MB). Peak memory consumption was 113.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:11:10,902 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory is still 118.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 387.43 ms. Allocated memory is still 142.6 MB. Free memory was 99.3 MB in the beginning and 89.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.43 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 89.8 MB in the beginning and 178.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 262.68 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 165.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3011.69 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 164.8 MB in the beginning and 79.2 MB in the end (delta: 85.6 MB). Peak memory consumption was 113.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 63 SDslu, 280 SDs, 0 SdLazy, 343 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, 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, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 32 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 182 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 11224 SizeOfPredicates, 13 NumberOfNonLiveVariables, 175 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 32/42 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...