/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:09:59,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:09:59,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:09:59,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:09:59,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:09:59,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:09:59,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:09:59,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:09:59,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:09:59,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:09:59,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:09:59,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:09:59,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:09:59,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:09:59,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:09:59,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:09:59,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:09:59,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:09:59,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:09:59,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:09:59,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:09:59,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:09:59,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:09:59,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:09:59,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:09:59,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:09:59,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:09:59,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:09:59,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 06:09:59,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:09:59,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:09:59,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:09:59,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:09:59,123 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:09:59,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:09:59,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:09:59,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:09:59,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:09:59,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:09:59,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:09:59,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:09:59,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:09:59,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:09:59,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:09:59,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:09:59,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:09:59,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:09:59,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:09:59,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:09:59,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:09:59,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:09:59,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:09:59,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:09:59,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:09:59,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:09:59,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:09:59,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:09:59,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:09:59,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 06:09:59,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:09:59,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:09:59,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:09:59,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:09:59,451 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:09:59,452 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-20 06:09:59,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0a97453/0d33e992df9b45a8926114d9f61f1465/FLAG37c279ae6 [2020-07-20 06:09:59,997 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:09:59,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-20 06:10:00,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0a97453/0d33e992df9b45a8926114d9f61f1465/FLAG37c279ae6 [2020-07-20 06:10:00,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0a97453/0d33e992df9b45a8926114d9f61f1465 [2020-07-20 06:10:00,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:10:00,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:10:00,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:10:00,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:10:00,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:10:00,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:10:00" (1/1) ... [2020-07-20 06:10:00,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3244b46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00, skipping insertion in model container [2020-07-20 06:10:00,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:10:00" (1/1) ... [2020-07-20 06:10:00,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:10:00,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:10:00,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:10:00,552 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:10:00,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:10:00,583 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:10:00,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00 WrapperNode [2020-07-20 06:10:00,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:10:00,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:10:00,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:10:00,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:10:00,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00" (1/1) ... [2020-07-20 06:10:00,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00" (1/1) ... [2020-07-20 06:10:00,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00" (1/1) ... [2020-07-20 06:10:00,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00" (1/1) ... [2020-07-20 06:10:00,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00" (1/1) ... [2020-07-20 06:10:00,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00" (1/1) ... [2020-07-20 06:10:00,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00" (1/1) ... [2020-07-20 06:10:00,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:10:00,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:10:00,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:10:00,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:10:00,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:10:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:10:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:10:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:10:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:10:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:10:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:10:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:10:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:10:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:10:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:10:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:10:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:10:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:10:00,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:10:00,966 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 06:10:00,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:10:00 BoogieIcfgContainer [2020-07-20 06:10:00,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:10:00,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:10:00,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:10:00,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:10:00,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:10:00" (1/3) ... [2020-07-20 06:10:00,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f352c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:10:00, skipping insertion in model container [2020-07-20 06:10:00,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:00" (2/3) ... [2020-07-20 06:10:00,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f352c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:10:00, skipping insertion in model container [2020-07-20 06:10:00,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:10:00" (3/3) ... [2020-07-20 06:10:00,983 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2020-07-20 06:10:00,994 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:10:01,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:10:01,017 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:10:01,043 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:10:01,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:10:01,044 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:10:01,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:10:01,044 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:10:01,044 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:10:01,044 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:10:01,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:10:01,064 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 06:10:01,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 06:10:01,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:10:01,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:10:01,072 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:10:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:10:01,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1915647303, now seen corresponding path program 1 times [2020-07-20 06:10:01,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:10:01,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641174002] [2020-07-20 06:10:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@da2e44c [2020-07-20 06:10:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:10:01,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641174002] [2020-07-20 06:10:01,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:10:01,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 06:10:01,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421638687] [2020-07-20 06:10:01,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 06:10:01,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:10:01,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 06:10:01,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 06:10:01,224 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-20 06:10:01,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:10:01,250 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-07-20 06:10:01,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 06:10:01,252 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-20 06:10:01,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:10:01,262 INFO L225 Difference]: With dead ends: 32 [2020-07-20 06:10:01,262 INFO L226 Difference]: Without dead ends: 13 [2020-07-20 06:10:01,266 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 06:10:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-20 06:10:01,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-20 06:10:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-20 06:10:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-20 06:10:01,309 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-20 06:10:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:10:01,309 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-20 06:10:01,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 06:10:01,310 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-20 06:10:01,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 06:10:01,310 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:10:01,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:10:01,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:10:01,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:10:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:10:01,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2084433522, now seen corresponding path program 1 times [2020-07-20 06:10:01,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:10:01,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057159160] [2020-07-20 06:10:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@da2e44c [2020-07-20 06:10:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:01,511 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 3 [2020-07-20 06:10:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:10:01,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057159160] [2020-07-20 06:10:01,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:10:01,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:10:01,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27017772] [2020-07-20 06:10:01,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:10:01,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:10:01,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:10:01,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:10:01,633 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-07-20 06:10:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:10:01,689 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-20 06:10:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:10:01,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-20 06:10:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:10:01,691 INFO L225 Difference]: With dead ends: 21 [2020-07-20 06:10:01,691 INFO L226 Difference]: Without dead ends: 16 [2020-07-20 06:10:01,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:10:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-20 06:10:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-20 06:10:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-20 06:10:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-20 06:10:01,699 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-20 06:10:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:10:01,699 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-20 06:10:01,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:10:01,700 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-20 06:10:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 06:10:01,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:10:01,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:10:01,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:10:01,702 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:10:01,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:10:01,702 INFO L82 PathProgramCache]: Analyzing trace with hash 249504553, now seen corresponding path program 1 times [2020-07-20 06:10:01,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:10:01,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191545381] [2020-07-20 06:10:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@da2e44c [2020-07-20 06:10:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:10:01,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191545381] [2020-07-20 06:10:01,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806705286] [2020-07-20 06:10:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@42f7814f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:10:01,888 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@42f7814f issued 4 check-sat command(s) [2020-07-20 06:10:01,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:10:01,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 06:10:01,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:10:01,938 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 06:10:01,978 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 06:10:01,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:10:01,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 06:10:01,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241293824] [2020-07-20 06:10:01,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 06:10:01,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:10:01,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 06:10:01,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:10:01,982 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2020-07-20 06:10:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:10:02,053 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-20 06:10:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:10:02,054 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-07-20 06:10:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:10:02,055 INFO L225 Difference]: With dead ends: 24 [2020-07-20 06:10:02,055 INFO L226 Difference]: Without dead ends: 19 [2020-07-20 06:10:02,056 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 06:10:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-20 06:10:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-20 06:10:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 06:10:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-20 06:10:02,061 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2020-07-20 06:10:02,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:10:02,061 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-20 06:10:02,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 06:10:02,062 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-20 06:10:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 06:10:02,063 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:10:02,063 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:10:02,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 06:10:02,278 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:10:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:10:02,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2070634734, now seen corresponding path program 2 times [2020-07-20 06:10:02,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:10:02,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840447967] [2020-07-20 06:10:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@da2e44c [2020-07-20 06:10:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:02,403 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 06:10:02,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840447967] [2020-07-20 06:10:02,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723525560] [2020-07-20 06:10:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10be3292 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:10:02,442 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10be3292 issued 4 check-sat command(s) [2020-07-20 06:10:02,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:10:02,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 06:10:02,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:10:02,476 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 06:10:02,504 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 06:10:02,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:10:02,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 06:10:02,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110583609] [2020-07-20 06:10:02,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 06:10:02,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:10:02,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 06:10:02,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-20 06:10:02,507 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 10 states. [2020-07-20 06:10:02,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:10:02,552 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-07-20 06:10:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:10:02,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-07-20 06:10:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:10:02,554 INFO L225 Difference]: With dead ends: 19 [2020-07-20 06:10:02,554 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 06:10:02,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 06:10:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 06:10:02,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 06:10:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 06:10:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 06:10:02,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-20 06:10:02,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:10:02,557 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 06:10:02,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 06:10:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 06:10:02,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 06:10:02,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:10:02,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 06:10:02,806 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 06:10:02,806 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:10:02,807 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:10:02,807 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 06:10:02,807 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 06:10:02,807 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 06:10:02,807 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:10:02,808 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 06:10:02,808 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:10:02,808 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:10:02,808 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2020-07-20 06:10:02,808 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 22) no Hoare annotation was computed. [2020-07-20 06:10:02,809 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-20 06:10:02,809 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-07-20 06:10:02,809 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-07-20 06:10:02,809 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 22) no Hoare annotation was computed. [2020-07-20 06:10:02,818 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 06:10:02,819 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2020-07-20 06:10:02,819 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 06:10:02,819 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 06:10:02,819 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 06:10:02,819 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 06:10:02,819 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 06:10:02,820 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 06:10:02,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:10:02 BoogieIcfgContainer [2020-07-20 06:10:02,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:10:02,840 INFO L168 Benchmark]: Toolchain (without parser) took 2508.31 ms. Allocated memory was 144.2 MB in the beginning and 230.7 MB in the end (delta: 86.5 MB). Free memory was 102.1 MB in the beginning and 200.4 MB in the end (delta: -98.3 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-07-20 06:10:02,841 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 06:10:02,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.93 ms. Allocated memory is still 144.2 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-20 06:10:02,843 INFO L168 Benchmark]: Boogie Preprocessor took 29.12 ms. Allocated memory is still 144.2 MB. Free memory was 92.6 MB in the beginning and 90.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-07-20 06:10:02,844 INFO L168 Benchmark]: RCFGBuilder took 356.45 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 90.9 MB in the beginning and 167.7 MB in the end (delta: -76.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-20 06:10:02,845 INFO L168 Benchmark]: TraceAbstraction took 1865.84 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 166.7 MB in the beginning and 200.4 MB in the end (delta: -33.7 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. [2020-07-20 06:10:02,849 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 144.2 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.93 ms. Allocated memory is still 144.2 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.12 ms. Allocated memory is still 144.2 MB. Free memory was 92.6 MB in the beginning and 90.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.45 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 90.9 MB in the beginning and 167.7 MB in the end (delta: -76.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1865.84 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 166.7 MB in the beginning and 200.4 MB in the end (delta: -33.7 MB). Peak memory consumption was 90.1 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: 1.7s, 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, 0.4s 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, 0.6s 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...