/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:51:07,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:51:07,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:51:07,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:51:07,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:51:07,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:51:07,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:51:07,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:51:07,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:51:07,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:51:07,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:51:07,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:51:07,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:51:07,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:51:07,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:51:07,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:51:07,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:51:07,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:51:07,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:51:07,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:51:07,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:51:07,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:51:07,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:51:07,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:51:07,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:51:07,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:51:07,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:51:07,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:51:07,678 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 01:51:07,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:51:07,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:51:07,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:51:07,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:51:07,695 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:51:07,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:51:07,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:51:07,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:51:07,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:51:07,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:51:07,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:51:07,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:51:07,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:51:07,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:51:07,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:51:07,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:51:07,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:51:07,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:51:07,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:51:07,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:51:07,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:51:07,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:51:07,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:51:07,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:51:07,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:51:07,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:51:07,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:51:07,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:51:07,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:51:07,700 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 01:51:07,997 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:51:08,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:51:08,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:51:08,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:51:08,020 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:51:08,022 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-20 01:51:08,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d3aaab34/bed5a20ea80b41bb9bab99f673d54519/FLAGb0a02cc36 [2020-07-20 01:51:08,626 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:51:08,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-20 01:51:08,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d3aaab34/bed5a20ea80b41bb9bab99f673d54519/FLAGb0a02cc36 [2020-07-20 01:51:09,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d3aaab34/bed5a20ea80b41bb9bab99f673d54519 [2020-07-20 01:51:09,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:51:09,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:51:09,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:51:09,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:51:09,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:51:09,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:51:09" (1/1) ... [2020-07-20 01:51:09,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9e224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09, skipping insertion in model container [2020-07-20 01:51:09,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:51:09" (1/1) ... [2020-07-20 01:51:09,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:51:09,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:51:09,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:51:09,307 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:51:09,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:51:09,335 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:51:09,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09 WrapperNode [2020-07-20 01:51:09,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:51:09,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:51:09,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:51:09,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:51:09,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09" (1/1) ... [2020-07-20 01:51:09,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09" (1/1) ... [2020-07-20 01:51:09,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09" (1/1) ... [2020-07-20 01:51:09,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09" (1/1) ... [2020-07-20 01:51:09,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09" (1/1) ... [2020-07-20 01:51:09,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09" (1/1) ... [2020-07-20 01:51:09,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09" (1/1) ... [2020-07-20 01:51:09,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:51:09,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:51:09,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:51:09,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:51:09,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09" (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 01:51:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:51:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:51:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:51:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:51:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:51:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:51:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:51:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:51:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:51:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:51:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:51:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:51:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:51:09,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:51:09,721 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 01:51:09,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:51:09 BoogieIcfgContainer [2020-07-20 01:51:09,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:51:09,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:51:09,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:51:09,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:51:09,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:51:09" (1/3) ... [2020-07-20 01:51:09,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3959c1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:51:09, skipping insertion in model container [2020-07-20 01:51:09,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:51:09" (2/3) ... [2020-07-20 01:51:09,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3959c1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:51:09, skipping insertion in model container [2020-07-20 01:51:09,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:51:09" (3/3) ... [2020-07-20 01:51:09,734 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2020-07-20 01:51:09,746 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:51:09,757 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:51:09,773 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:51:09,805 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:51:09,806 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:51:09,806 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:51:09,806 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:51:09,806 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:51:09,806 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:51:09,807 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:51:09,807 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:51:09,843 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 01:51:09,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 01:51:09,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:51:09,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:51:09,856 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:51:09,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:51:09,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1915647303, now seen corresponding path program 1 times [2020-07-20 01:51:09,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:51:09,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962692873] [2020-07-20 01:51:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ab2ae0b [2020-07-20 01:51:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:51:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:51:10,008 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 01:51:10,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962692873] [2020-07-20 01:51:10,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:51:10,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 01:51:10,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212830117] [2020-07-20 01:51:10,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 01:51:10,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:51:10,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 01:51:10,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 01:51:10,036 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-20 01:51:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:51:10,061 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-07-20 01:51:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 01:51:10,063 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-20 01:51:10,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:51:10,072 INFO L225 Difference]: With dead ends: 32 [2020-07-20 01:51:10,072 INFO L226 Difference]: Without dead ends: 13 [2020-07-20 01:51:10,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 01:51:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-20 01:51:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-20 01:51:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-20 01:51:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-20 01:51:10,118 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-20 01:51:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:51:10,118 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-20 01:51:10,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 01:51:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-20 01:51:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 01:51:10,119 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:51:10,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:51:10,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:51:10,121 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:51:10,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:51:10,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2084433522, now seen corresponding path program 1 times [2020-07-20 01:51:10,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:51:10,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72216720] [2020-07-20 01:51:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ab2ae0b [2020-07-20 01:51:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:51:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:51:10,268 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 01:51:10,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72216720] [2020-07-20 01:51:10,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:51:10,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:51:10,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743700921] [2020-07-20 01:51:10,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:51:10,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:51:10,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:51:10,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:51:10,273 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-07-20 01:51:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:51:10,323 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-20 01:51:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:51:10,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-20 01:51:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:51:10,325 INFO L225 Difference]: With dead ends: 21 [2020-07-20 01:51:10,325 INFO L226 Difference]: Without dead ends: 16 [2020-07-20 01:51:10,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:51:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-20 01:51:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-20 01:51:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-20 01:51:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-20 01:51:10,333 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-20 01:51:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:51:10,333 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-20 01:51:10,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:51:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-20 01:51:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 01:51:10,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:51:10,335 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:51:10,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:51:10,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:51:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:51:10,336 INFO L82 PathProgramCache]: Analyzing trace with hash 249504553, now seen corresponding path program 1 times [2020-07-20 01:51:10,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:51:10,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459193182] [2020-07-20 01:51:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ab2ae0b [2020-07-20 01:51:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:51:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:51:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:51:10,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459193182] [2020-07-20 01:51:10,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832164617] [2020-07-20 01:51:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@25af1b0b 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 01:51:10,504 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@25af1b0b issued 4 check-sat command(s) [2020-07-20 01:51:10,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:51:10,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 01:51:10,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:51:10,569 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:51:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:51:10,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:51:10,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 01:51:10,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094982396] [2020-07-20 01:51:10,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:51:10,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:51:10,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:51:10,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:51:10,609 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2020-07-20 01:51:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:51:10,680 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-20 01:51:10,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:51:10,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-07-20 01:51:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:51:10,683 INFO L225 Difference]: With dead ends: 24 [2020-07-20 01:51:10,683 INFO L226 Difference]: Without dead ends: 19 [2020-07-20 01:51:10,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:51:10,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-20 01:51:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-20 01:51:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 01:51:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-20 01:51:10,689 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2020-07-20 01:51:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:51:10,690 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-20 01:51:10,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:51:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-20 01:51:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 01:51:10,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:51:10,691 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:51:10,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 01:51:10,896 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:51:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:51:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2070634734, now seen corresponding path program 2 times [2020-07-20 01:51:10,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:51:10,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100988122] [2020-07-20 01:51:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ab2ae0b [2020-07-20 01:51:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:51:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:51:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:51:11,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100988122] [2020-07-20 01:51:11,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701443415] [2020-07-20 01:51:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@321997f8 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:51:11,062 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@321997f8 issued 4 check-sat command(s) [2020-07-20 01:51:11,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:51:11,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 01:51:11,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:51:11,095 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:51:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:51:11,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:51:11,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 01:51:11,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922859944] [2020-07-20 01:51:11,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 01:51:11,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:51:11,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 01:51:11,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:51:11,127 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 10 states. [2020-07-20 01:51:11,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:51:11,170 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-07-20 01:51:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:51:11,171 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-07-20 01:51:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:51:11,171 INFO L225 Difference]: With dead ends: 19 [2020-07-20 01:51:11,172 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:51:11,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:51:11,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:51:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:51:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:51:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:51:11,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-20 01:51:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:51:11,174 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:51:11,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 01:51:11,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:51:11,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:51:11,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:51:11,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:51:11,437 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 01:51:11,438 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:51:11,438 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:51:11,438 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:51:11,438 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:51:11,438 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:51:11,439 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:51:11,439 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 01:51:11,439 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:51:11,439 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:51:11,439 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2020-07-20 01:51:11,439 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 22) no Hoare annotation was computed. [2020-07-20 01:51:11,440 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-20 01:51:11,440 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-07-20 01:51:11,440 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-07-20 01:51:11,440 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 22) no Hoare annotation was computed. [2020-07-20 01:51:11,440 INFO L264 CegarLoopResult]: At program point L16-5(lines 16 19) the Hoare annotation is: (and (<= main_~y~0 main_~x~0) (<= 0 main_~y~0) (<= 1 main_~x~0)) [2020-07-20 01:51:11,440 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2020-07-20 01:51:11,441 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 01:51:11,441 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 01:51:11,441 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 01:51:11,441 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 01:51:11,441 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 01:51:11,441 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 01:51:11,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:51:11 BoogieIcfgContainer [2020-07-20 01:51:11,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:51:11,466 INFO L168 Benchmark]: Toolchain (without parser) took 2390.82 ms. Allocated memory was 142.6 MB in the beginning and 234.9 MB in the end (delta: 92.3 MB). Free memory was 102.9 MB in the beginning and 202.0 MB in the end (delta: -99.0 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:51:11,467 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 142.6 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:51:11,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.79 ms. Allocated memory is still 142.6 MB. Free memory was 102.5 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:51:11,469 INFO L168 Benchmark]: Boogie Preprocessor took 118.39 ms. Allocated memory was 142.6 MB in the beginning and 202.4 MB in the end (delta: 59.8 MB). Free memory was 93.2 MB in the beginning and 182.4 MB in the end (delta: -89.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:51:11,470 INFO L168 Benchmark]: RCFGBuilder took 270.34 ms. Allocated memory is still 202.4 MB. Free memory was 182.4 MB in the beginning and 169.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:51:11,471 INFO L168 Benchmark]: TraceAbstraction took 1733.24 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 168.5 MB in the beginning and 202.0 MB in the end (delta: -33.5 MB). Peak memory consumption was 86.5 MB. Max. memory is 7.1 GB. [2020-07-20 01:51:11,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 142.6 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.79 ms. Allocated memory is still 142.6 MB. Free memory was 102.5 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.39 ms. Allocated memory was 142.6 MB in the beginning and 202.4 MB in the end (delta: 59.8 MB). Free memory was 93.2 MB in the beginning and 182.4 MB in the end (delta: -89.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 270.34 ms. Allocated memory is still 202.4 MB. Free memory was 182.4 MB in the beginning and 169.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1733.24 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 168.5 MB in the beginning and 202.0 MB in the end (delta: -33.5 MB). Peak memory consumption was 86.5 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: 16]: Loop Invariant Derived loop invariant: (y <= x && 0 <= y) && 1 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 15 SDslu, 122 SDs, 0 SdLazy, 49 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 18 HoareAnnotationTreeSize, 10 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 3014 SizeOfPredicates, 4 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 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...