/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_FUNCTIONS --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/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:33:43,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:33:43,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:33:43,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:33:43,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:33:43,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:33:43,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:33:43,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:33:43,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:33:43,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:33:43,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:33:43,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:33:43,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:33:43,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:33:43,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:33:43,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:33:43,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:33:43,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:33:43,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:33:43,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:33:43,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:33:43,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:33:43,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:33:43,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:33:43,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:33:43,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:33:43,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:33:43,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:33:43,375 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 [2020-07-19 23:33:43,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:33:43,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:33:43,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:33:43,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:33:43,404 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:33:43,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:33:43,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:33:43,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:33:43,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:33:43,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:33:43,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:33:43,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:33:43,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:33:43,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:33:43,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:33:43,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:33:43,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:33:43,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:33:43,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:33:43,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:33:43,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:33:43,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:33:43,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:33:43,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:33:43,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:33:43,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:33:43,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:33:43,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:33:43,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:33:43,412 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_FUNCTIONS 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 [2020-07-19 23:33:43,798 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:33:43,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:33:43,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:33:43,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:33:43,822 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:33:43,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-07-19 23:33:43,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77dce4d64/684ade4350fb4d928a5c5c3cf56e979b/FLAGa4fc7d0ba [2020-07-19 23:33:44,451 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:33:44,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-07-19 23:33:44,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77dce4d64/684ade4350fb4d928a5c5c3cf56e979b/FLAGa4fc7d0ba [2020-07-19 23:33:44,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77dce4d64/684ade4350fb4d928a5c5c3cf56e979b [2020-07-19 23:33:44,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:33:44,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:33:44,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:33:44,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:33:44,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:33:44,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:33:44" (1/1) ... [2020-07-19 23:33:44,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cafcdd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:44, skipping insertion in model container [2020-07-19 23:33:44,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:33:44" (1/1) ... [2020-07-19 23:33:44,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:33:44,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:33:45,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:33:45,145 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:33:45,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:33:45,204 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:33:45,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:45 WrapperNode [2020-07-19 23:33:45,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:33:45,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:33:45,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:33:45,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:33:45,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:45" (1/1) ... [2020-07-19 23:33:45,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:45" (1/1) ... [2020-07-19 23:33:45,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:45" (1/1) ... [2020-07-19 23:33:45,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:45" (1/1) ... [2020-07-19 23:33:45,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:45" (1/1) ... [2020-07-19 23:33:45,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:45" (1/1) ... [2020-07-19 23:33:45,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:45" (1/1) ... [2020-07-19 23:33:45,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:33:45,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:33:45,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:33:45,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:33:45,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:45" (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 [2020-07-19 23:33:45,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:33:45,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:33:45,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:33:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:33:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:33:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:33:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:33:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:33:46,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:33:46,008 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-19 23:33:46,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:33:46 BoogieIcfgContainer [2020-07-19 23:33:46,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:33:46,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:33:46,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:33:46,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:33:46,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:33:44" (1/3) ... [2020-07-19 23:33:46,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a38aa50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:33:46, skipping insertion in model container [2020-07-19 23:33:46,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:45" (2/3) ... [2020-07-19 23:33:46,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a38aa50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:33:46, skipping insertion in model container [2020-07-19 23:33:46,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:33:46" (3/3) ... [2020-07-19 23:33:46,028 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-07-19 23:33:46,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:33:46,053 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:33:46,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:33:46,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:33:46,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:33:46,101 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:33:46,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:33:46,102 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:33:46,102 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:33:46,102 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:33:46,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:33:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-19 23:33:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 23:33:46,132 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:33:46,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:33:46,134 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:33:46,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:33:46,140 INFO L82 PathProgramCache]: Analyzing trace with hash -901605196, now seen corresponding path program 1 times [2020-07-19 23:33:46,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:33:46,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410704192] [2020-07-19 23:33:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6289e1e3 [2020-07-19 23:33:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:33:46,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410704192] [2020-07-19 23:33:46,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:33:46,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 23:33:46,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604398436] [2020-07-19 23:33:46,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:33:46,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:33:46,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:33:46,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:33:46,400 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-07-19 23:33:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:33:46,478 INFO L93 Difference]: Finished difference Result 136 states and 250 transitions. [2020-07-19 23:33:46,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:33:46,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-19 23:33:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:33:46,497 INFO L225 Difference]: With dead ends: 136 [2020-07-19 23:33:46,498 INFO L226 Difference]: Without dead ends: 61 [2020-07-19 23:33:46,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:33:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-19 23:33:46,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-07-19 23:33:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-19 23:33:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions. [2020-07-19 23:33:46,573 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 13 [2020-07-19 23:33:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:33:46,574 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 91 transitions. [2020-07-19 23:33:46,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:33:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2020-07-19 23:33:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 23:33:46,576 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:33:46,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:33:46,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:33:46,577 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:33:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:33:46,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463811, now seen corresponding path program 1 times [2020-07-19 23:33:46,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:33:46,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843244386] [2020-07-19 23:33:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6289e1e3 [2020-07-19 23:33:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:33:46,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843244386] [2020-07-19 23:33:46,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:33:46,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:33:46,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179245217] [2020-07-19 23:33:46,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:33:46,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:33:46,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:33:46,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:33:46,725 INFO L87 Difference]: Start difference. First operand 61 states and 91 transitions. Second operand 4 states. [2020-07-19 23:33:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:33:47,027 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2020-07-19 23:33:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:33:47,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-19 23:33:47,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:33:47,030 INFO L225 Difference]: With dead ends: 119 [2020-07-19 23:33:47,031 INFO L226 Difference]: Without dead ends: 64 [2020-07-19 23:33:47,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:33:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-19 23:33:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-07-19 23:33:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-19 23:33:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2020-07-19 23:33:47,064 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 14 [2020-07-19 23:33:47,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:33:47,064 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2020-07-19 23:33:47,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:33:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2020-07-19 23:33:47,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 23:33:47,066 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:33:47,066 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:33:47,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:33:47,067 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:33:47,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:33:47,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1212559863, now seen corresponding path program 1 times [2020-07-19 23:33:47,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:33:47,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526921370] [2020-07-19 23:33:47,070 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6289e1e3 [2020-07-19 23:33:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:33:47,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526921370] [2020-07-19 23:33:47,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:33:47,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:33:47,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181025082] [2020-07-19 23:33:47,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:33:47,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:33:47,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:33:47,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:33:47,184 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 4 states. [2020-07-19 23:33:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:33:47,303 INFO L93 Difference]: Finished difference Result 113 states and 169 transitions. [2020-07-19 23:33:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:33:47,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-19 23:33:47,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:33:47,305 INFO L225 Difference]: With dead ends: 113 [2020-07-19 23:33:47,305 INFO L226 Difference]: Without dead ends: 56 [2020-07-19 23:33:47,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:33:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-19 23:33:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-19 23:33:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-19 23:33:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 80 transitions. [2020-07-19 23:33:47,317 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 80 transitions. Word has length 19 [2020-07-19 23:33:47,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:33:47,317 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 80 transitions. [2020-07-19 23:33:47,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:33:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 80 transitions. [2020-07-19 23:33:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 23:33:47,319 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:33:47,319 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:33:47,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 23:33:47,319 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:33:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:33:47,320 INFO L82 PathProgramCache]: Analyzing trace with hash -2054021688, now seen corresponding path program 1 times [2020-07-19 23:33:47,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:33:47,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652801353] [2020-07-19 23:33:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6289e1e3 [2020-07-19 23:33:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:33:47,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652801353] [2020-07-19 23:33:47,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:33:47,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:33:47,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309523301] [2020-07-19 23:33:47,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:33:47,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:33:47,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:33:47,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:33:47,464 INFO L87 Difference]: Start difference. First operand 56 states and 80 transitions. Second operand 4 states. [2020-07-19 23:33:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:33:47,706 INFO L93 Difference]: Finished difference Result 140 states and 210 transitions. [2020-07-19 23:33:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:33:47,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-19 23:33:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:33:47,708 INFO L225 Difference]: With dead ends: 140 [2020-07-19 23:33:47,709 INFO L226 Difference]: Without dead ends: 94 [2020-07-19 23:33:47,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:33:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-07-19 23:33:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-07-19 23:33:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-19 23:33:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 132 transitions. [2020-07-19 23:33:47,722 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 132 transitions. Word has length 24 [2020-07-19 23:33:47,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:33:47,723 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 132 transitions. [2020-07-19 23:33:47,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:33:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 132 transitions. [2020-07-19 23:33:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-19 23:33:47,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:33:47,724 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:33:47,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 23:33:47,725 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:33:47,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:33:47,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1279925660, now seen corresponding path program 1 times [2020-07-19 23:33:47,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:33:47,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192565532] [2020-07-19 23:33:47,726 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6289e1e3 [2020-07-19 23:33:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:33:47,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192565532] [2020-07-19 23:33:47,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:33:47,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:33:47,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332192829] [2020-07-19 23:33:47,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:33:47,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:33:47,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:33:47,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:33:47,808 INFO L87 Difference]: Start difference. First operand 91 states and 132 transitions. Second operand 4 states. [2020-07-19 23:33:47,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:33:47,929 INFO L93 Difference]: Finished difference Result 180 states and 262 transitions. [2020-07-19 23:33:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:33:47,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-19 23:33:47,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:33:47,932 INFO L225 Difference]: With dead ends: 180 [2020-07-19 23:33:47,932 INFO L226 Difference]: Without dead ends: 101 [2020-07-19 23:33:47,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:33:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-07-19 23:33:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-07-19 23:33:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-07-19 23:33:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 140 transitions. [2020-07-19 23:33:47,946 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 140 transitions. Word has length 25 [2020-07-19 23:33:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:33:47,947 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 140 transitions. [2020-07-19 23:33:47,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:33:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 140 transitions. [2020-07-19 23:33:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-19 23:33:47,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:33:47,949 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:33:47,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 23:33:47,950 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:33:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:33:47,951 INFO L82 PathProgramCache]: Analyzing trace with hash -964230168, now seen corresponding path program 1 times [2020-07-19 23:33:47,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:33:47,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41700728] [2020-07-19 23:33:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6289e1e3 [2020-07-19 23:33:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 23:33:48,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41700728] [2020-07-19 23:33:48,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:33:48,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:33:48,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142377963] [2020-07-19 23:33:48,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:33:48,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:33:48,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:33:48,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:33:48,111 INFO L87 Difference]: Start difference. First operand 99 states and 140 transitions. Second operand 4 states. [2020-07-19 23:33:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:33:48,217 INFO L93 Difference]: Finished difference Result 164 states and 234 transitions. [2020-07-19 23:33:48,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:33:48,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-07-19 23:33:48,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:33:48,220 INFO L225 Difference]: With dead ends: 164 [2020-07-19 23:33:48,220 INFO L226 Difference]: Without dead ends: 77 [2020-07-19 23:33:48,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:33:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-19 23:33:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-07-19 23:33:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-19 23:33:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2020-07-19 23:33:48,230 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 36 [2020-07-19 23:33:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:33:48,231 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2020-07-19 23:33:48,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:33:48,231 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2020-07-19 23:33:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-19 23:33:48,233 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:33:48,233 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:33:48,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 23:33:48,233 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:33:48,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:33:48,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1856126908, now seen corresponding path program 1 times [2020-07-19 23:33:48,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:33:48,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128051413] [2020-07-19 23:33:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6289e1e3 [2020-07-19 23:33:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:33:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 23:33:48,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128051413] [2020-07-19 23:33:48,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:33:48,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:33:48,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314274576] [2020-07-19 23:33:48,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:33:48,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:33:48,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:33:48,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:33:48,333 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand 5 states. [2020-07-19 23:33:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:33:48,597 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2020-07-19 23:33:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:33:48,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-07-19 23:33:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:33:48,600 INFO L225 Difference]: With dead ends: 80 [2020-07-19 23:33:48,601 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:33:48,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:33:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:33:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:33:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:33:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:33:48,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-07-19 23:33:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:33:48,605 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:33:48,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:33:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:33:48,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:33:48,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 23:33:48,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:33:48,814 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:33:48,815 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= ~m_close~0 |old(~m_close~0)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_flush~0 |old(~m_flush~0)|) (= ~m_connect_2~0 |old(~m_connect_2~0)|)) [2020-07-19 23:33:48,815 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:33:48,815 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:33:48,816 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:33:48,816 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:33:48,816 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:33:48,816 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 344) no Hoare annotation was computed. [2020-07-19 23:33:48,816 INFO L268 CegarLoopResult]: For program point L36(lines 36 47) no Hoare annotation was computed. [2020-07-19 23:33:48,816 INFO L268 CegarLoopResult]: For program point L86(lines 86 101) no Hoare annotation was computed. [2020-07-19 23:33:48,817 INFO L268 CegarLoopResult]: For program point L53(lines 53 104) no Hoare annotation was computed. [2020-07-19 23:33:48,817 INFO L268 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-07-19 23:33:48,817 INFO L268 CegarLoopResult]: For program point L70(lines 70 85) no Hoare annotation was computed. [2020-07-19 23:33:48,817 INFO L268 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-07-19 23:33:48,817 INFO L268 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-07-19 23:33:48,817 INFO L268 CegarLoopResult]: For program point L54(lines 54 69) no Hoare annotation was computed. [2020-07-19 23:33:48,818 INFO L264 CegarLoopResult]: At program point L335(lines 23 339) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_sink~0))) (or (and (= 0 main_~q~0) .cse0) (and .cse0 (= 2 main_~q~0)) (and (<= 3 main_~q~0) (not .cse0)))) [2020-07-19 23:33:48,818 INFO L268 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-07-19 23:33:48,818 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 344) no Hoare annotation was computed. [2020-07-19 23:33:48,818 INFO L268 CegarLoopResult]: For program point L170(lines 170 185) no Hoare annotation was computed. [2020-07-19 23:33:48,818 INFO L268 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-07-19 23:33:48,819 INFO L268 CegarLoopResult]: For program point L154(lines 154 169) no Hoare annotation was computed. [2020-07-19 23:33:48,819 INFO L268 CegarLoopResult]: For program point L88(lines 88 99) no Hoare annotation was computed. [2020-07-19 23:33:48,819 INFO L268 CegarLoopResult]: For program point L270(lines 270 285) no Hoare annotation was computed. [2020-07-19 23:33:48,819 INFO L268 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-07-19 23:33:48,819 INFO L268 CegarLoopResult]: For program point L138(lines 138 153) no Hoare annotation was computed. [2020-07-19 23:33:48,819 INFO L268 CegarLoopResult]: For program point L105(lines 105 220) no Hoare annotation was computed. [2020-07-19 23:33:48,819 INFO L268 CegarLoopResult]: For program point L72(lines 72 83) no Hoare annotation was computed. [2020-07-19 23:33:48,820 INFO L268 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-07-19 23:33:48,820 INFO L268 CegarLoopResult]: For program point L254(lines 254 269) no Hoare annotation was computed. [2020-07-19 23:33:48,820 INFO L268 CegarLoopResult]: For program point L221(lines 221 336) no Hoare annotation was computed. [2020-07-19 23:33:48,820 INFO L268 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-07-19 23:33:48,820 INFO L268 CegarLoopResult]: For program point L122(lines 122 137) no Hoare annotation was computed. [2020-07-19 23:33:48,820 INFO L268 CegarLoopResult]: For program point L56(lines 56 67) no Hoare annotation was computed. [2020-07-19 23:33:48,821 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 339) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_sink~0))) (or (and (= 0 main_~q~0) .cse0) (and (<= 3 main_~q~0) (not .cse0)))) [2020-07-19 23:33:48,821 INFO L268 CegarLoopResult]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2020-07-19 23:33:48,821 INFO L268 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-07-19 23:33:48,821 INFO L268 CegarLoopResult]: For program point L238(lines 238 253) no Hoare annotation was computed. [2020-07-19 23:33:48,821 INFO L268 CegarLoopResult]: For program point L172(lines 172 183) no Hoare annotation was computed. [2020-07-19 23:33:48,821 INFO L268 CegarLoopResult]: For program point L106(lines 106 121) no Hoare annotation was computed. [2020-07-19 23:33:48,822 INFO L268 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-07-19 23:33:48,822 INFO L268 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-07-19 23:33:48,822 INFO L268 CegarLoopResult]: For program point L222(lines 222 237) no Hoare annotation was computed. [2020-07-19 23:33:48,822 INFO L268 CegarLoopResult]: For program point L156(lines 156 167) no Hoare annotation was computed. [2020-07-19 23:33:48,822 INFO L268 CegarLoopResult]: For program point L272(lines 272 283) no Hoare annotation was computed. [2020-07-19 23:33:48,822 INFO L268 CegarLoopResult]: For program point L140(lines 140 151) no Hoare annotation was computed. [2020-07-19 23:33:48,822 INFO L268 CegarLoopResult]: For program point L256(lines 256 267) no Hoare annotation was computed. [2020-07-19 23:33:48,823 INFO L268 CegarLoopResult]: For program point L124(lines 124 135) no Hoare annotation was computed. [2020-07-19 23:33:48,823 INFO L268 CegarLoopResult]: For program point L240(lines 240 251) no Hoare annotation was computed. [2020-07-19 23:33:48,823 INFO L268 CegarLoopResult]: For program point L108(lines 108 119) no Hoare annotation was computed. [2020-07-19 23:33:48,823 INFO L268 CegarLoopResult]: For program point L224(lines 224 235) no Hoare annotation was computed. [2020-07-19 23:33:48,823 INFO L268 CegarLoopResult]: For program point L92(lines 92 94) no Hoare annotation was computed. [2020-07-19 23:33:48,823 INFO L268 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-07-19 23:33:48,823 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-07-19 23:33:48,824 INFO L268 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-07-19 23:33:48,824 INFO L268 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-07-19 23:33:48,824 INFO L268 CegarLoopResult]: For program point L60(lines 60 62) no Hoare annotation was computed. [2020-07-19 23:33:48,824 INFO L268 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-07-19 23:33:48,824 INFO L268 CegarLoopResult]: For program point L176(lines 176 178) no Hoare annotation was computed. [2020-07-19 23:33:48,824 INFO L264 CegarLoopResult]: At program point L325(lines 13 344) the Hoare annotation is: false [2020-07-19 23:33:48,825 INFO L268 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-07-19 23:33:48,825 INFO L268 CegarLoopResult]: For program point L160(lines 160 162) no Hoare annotation was computed. [2020-07-19 23:33:48,825 INFO L268 CegarLoopResult]: For program point L276(lines 276 278) no Hoare annotation was computed. [2020-07-19 23:33:48,825 INFO L268 CegarLoopResult]: For program point L144(lines 144 146) no Hoare annotation was computed. [2020-07-19 23:33:48,825 INFO L268 CegarLoopResult]: For program point L260(lines 260 262) no Hoare annotation was computed. [2020-07-19 23:33:48,825 INFO L268 CegarLoopResult]: For program point L128(lines 128 130) no Hoare annotation was computed. [2020-07-19 23:33:48,825 INFO L268 CegarLoopResult]: For program point L244(lines 244 246) no Hoare annotation was computed. [2020-07-19 23:33:48,826 INFO L268 CegarLoopResult]: For program point L112(lines 112 114) no Hoare annotation was computed. [2020-07-19 23:33:48,826 INFO L268 CegarLoopResult]: For program point L228(lines 228 230) no Hoare annotation was computed. [2020-07-19 23:33:48,826 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-07-19 23:33:48,826 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 344) the Hoare annotation is: true [2020-07-19 23:33:48,826 INFO L268 CegarLoopResult]: For program point L33(lines 33 52) no Hoare annotation was computed. [2020-07-19 23:33:48,826 INFO L268 CegarLoopResult]: For program point L34(lines 34 49) no Hoare annotation was computed. [2020-07-19 23:33:48,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:33:48 BoogieIcfgContainer [2020-07-19 23:33:48,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:33:48,855 INFO L168 Benchmark]: Toolchain (without parser) took 4081.26 ms. Allocated memory was 142.6 MB in the beginning and 251.7 MB in the end (delta: 109.1 MB). Free memory was 100.3 MB in the beginning and 185.8 MB in the end (delta: -85.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-07-19 23:33:48,856 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 142.6 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 23:33:48,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.95 ms. Allocated memory is still 142.6 MB. Free memory was 99.9 MB in the beginning and 87.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:33:48,858 INFO L168 Benchmark]: Boogie Preprocessor took 171.46 ms. Allocated memory was 142.6 MB in the beginning and 199.2 MB in the end (delta: 56.6 MB). Free memory was 87.4 MB in the beginning and 176.5 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-19 23:33:48,859 INFO L168 Benchmark]: RCFGBuilder took 638.12 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 148.9 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-07-19 23:33:48,860 INFO L168 Benchmark]: TraceAbstraction took 2834.44 ms. Allocated memory was 199.2 MB in the beginning and 251.7 MB in the end (delta: 52.4 MB). Free memory was 148.2 MB in the beginning and 185.8 MB in the end (delta: -37.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:33:48,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 142.6 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 427.95 ms. Allocated memory is still 142.6 MB. Free memory was 99.9 MB in the beginning and 87.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.46 ms. Allocated memory was 142.6 MB in the beginning and 199.2 MB in the end (delta: 56.6 MB). Free memory was 87.4 MB in the beginning and 176.5 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 638.12 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 148.9 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2834.44 ms. Allocated memory was 199.2 MB in the beginning and 251.7 MB in the end (delta: 52.4 MB). Free memory was 148.2 MB in the beginning and 185.8 MB in the end (delta: -37.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: 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: 23]: Loop Invariant Derived loop invariant: ((0 == q && 0 == this_sink) || (0 == this_sink && 2 == q)) || (3 <= q && !(0 == this_sink)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (0 == q && 0 == this_sink) || (3 <= q && !(0 == this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 549 SDtfs, 777 SDslu, 50 SDs, 0 SdLazy, 351 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 62 HoareAnnotationTreeSize, 7 FomulaSimplifications, 65 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 9729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 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...