/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:07:45,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:07:45,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:07:45,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:07:45,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:07:45,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:07:45,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:07:45,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:07:45,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:07:45,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:07:45,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:07:45,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:07:45,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:07:45,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:07:45,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:07:45,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:07:45,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:07:45,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:07:45,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:07:45,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:07:45,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:07:45,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:07:45,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:07:45,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:07:45,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 15:07:45,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:07:45,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:07:45,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:07:45,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:07:45,444 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:07:45,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:07:45,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:07:45,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:07:45,446 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:07:45,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:07:45,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:07:45,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:07:45,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:07:45,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:07:45,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:07:45,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:07:45,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:07:45,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:07:45,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:07:45,448 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:07:45,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:07:45,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:07:45,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:07:45,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:07:45,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:07:45,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:07:45,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:07:45,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:07:45,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:07:45,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:07:45,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:07:45,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:07:45,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:07:45,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:07:45,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:07:45,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:07:45,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:07:45,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:07:45,948 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:07:45,949 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-24 15:07:46,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfde2956d/d565652d7e604ad885c167bb5a70996d/FLAG26c064f49 [2020-09-24 15:07:46,569 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:07:46,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-24 15:07:46,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfde2956d/d565652d7e604ad885c167bb5a70996d/FLAG26c064f49 [2020-09-24 15:07:46,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfde2956d/d565652d7e604ad885c167bb5a70996d [2020-09-24 15:07:46,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:07:46,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:07:46,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:07:46,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:07:46,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:07:46,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:07:46" (1/1) ... [2020-09-24 15:07:46,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:46, skipping insertion in model container [2020-09-24 15:07:46,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:07:46" (1/1) ... [2020-09-24 15:07:46,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:07:46,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:07:47,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:07:47,208 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:07:47,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:07:47,258 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:07:47,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:47 WrapperNode [2020-09-24 15:07:47,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:07:47,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:07:47,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:07:47,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:07:47,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:47" (1/1) ... [2020-09-24 15:07:47,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:47" (1/1) ... [2020-09-24 15:07:47,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:47" (1/1) ... [2020-09-24 15:07:47,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:47" (1/1) ... [2020-09-24 15:07:47,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:47" (1/1) ... [2020-09-24 15:07:47,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:47" (1/1) ... [2020-09-24 15:07:47,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:47" (1/1) ... [2020-09-24 15:07:47,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:07:47,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:07:47,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:07:47,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:07:47,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 15:07:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:07:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:07:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 15:07:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:07:47,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:07:47,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 15:07:47,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 15:07:47,467 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:07:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:07:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:07:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:07:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:07:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:07:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:07:47,813 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:07:47,815 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 15:07:47,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:07:47 BoogieIcfgContainer [2020-09-24 15:07:47,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:07:47,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:07:47,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:07:47,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:07:47,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:07:46" (1/3) ... [2020-09-24 15:07:47,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0f9eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:07:47, skipping insertion in model container [2020-09-24 15:07:47,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:07:47" (2/3) ... [2020-09-24 15:07:47,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0f9eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:07:47, skipping insertion in model container [2020-09-24 15:07:47,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:07:47" (3/3) ... [2020-09-24 15:07:47,835 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-24 15:07:47,845 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:07:47,853 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:07:47,873 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:07:47,901 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:07:47,901 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:07:47,901 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:07:47,901 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:07:47,902 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:07:47,902 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:07:47,902 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:07:47,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:07:47,924 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-24 15:07:47,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 15:07:47,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:47,933 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 15:07:47,933 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:47,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:47,939 INFO L82 PathProgramCache]: Analyzing trace with hash 435763839, now seen corresponding path program 1 times [2020-09-24 15:07:47,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:47,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782959837] [2020-09-24 15:07:47,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:07:48,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782959837] [2020-09-24 15:07:48,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:07:48,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 15:07:48,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353089029] [2020-09-24 15:07:48,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 15:07:48,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:48,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 15:07:48,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:07:48,253 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-09-24 15:07:48,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:48,412 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-09-24 15:07:48,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 15:07:48,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-24 15:07:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:48,426 INFO L225 Difference]: With dead ends: 81 [2020-09-24 15:07:48,427 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 15:07:48,432 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 [2020-09-24 15:07:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 15:07:48,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 15:07:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 15:07:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 15:07:48,488 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 27 [2020-09-24 15:07:48,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:48,489 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 15:07:48,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 15:07:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 15:07:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 15:07:48,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:48,491 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 15:07:48,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:07:48,492 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:48,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:48,492 INFO L82 PathProgramCache]: Analyzing trace with hash 424681587, now seen corresponding path program 1 times [2020-09-24 15:07:48,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:48,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272181192] [2020-09-24 15:07:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:48,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:07:48,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272181192] [2020-09-24 15:07:48,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:07:48,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:07:48,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512297730] [2020-09-24 15:07:48,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:07:48,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:48,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:07:48,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:07:48,616 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 4 states. [2020-09-24 15:07:48,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:48,735 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-24 15:07:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:07:48,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-24 15:07:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:48,739 INFO L225 Difference]: With dead ends: 73 [2020-09-24 15:07:48,740 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 15:07:48,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:07:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 15:07:48,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-09-24 15:07:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 15:07:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-24 15:07:48,752 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 27 [2020-09-24 15:07:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:48,752 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-24 15:07:48,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:07:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-24 15:07:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:07:48,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:48,754 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-09-24 15:07:48,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:07:48,755 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:48,755 INFO L82 PathProgramCache]: Analyzing trace with hash 164402036, now seen corresponding path program 1 times [2020-09-24 15:07:48,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:48,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782932221] [2020-09-24 15:07:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:07:48,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782932221] [2020-09-24 15:07:48,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:07:48,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 15:07:48,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125604316] [2020-09-24 15:07:48,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:07:48,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:48,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:07:48,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:07:48,979 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 6 states. [2020-09-24 15:07:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:49,159 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2020-09-24 15:07:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:07:49,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-24 15:07:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:49,161 INFO L225 Difference]: With dead ends: 80 [2020-09-24 15:07:49,161 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 15:07:49,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:07:49,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 15:07:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-09-24 15:07:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 15:07:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 15:07:49,171 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 34 [2020-09-24 15:07:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:49,171 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 15:07:49,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:07:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 15:07:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 15:07:49,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:07:49,173 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:07:49,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:07:49,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:07:49,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:07:49,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1692003667, now seen corresponding path program 2 times [2020-09-24 15:07:49,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:07:49,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659580437] [2020-09-24 15:07:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:07:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:49,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:07:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:07:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 15:07:49,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659580437] [2020-09-24 15:07:49,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:07:49,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:07:49,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267684631] [2020-09-24 15:07:49,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:07:49,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:07:49,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:07:49,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:07:49,289 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 5 states. [2020-09-24 15:07:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:07:49,397 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-09-24 15:07:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:07:49,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-24 15:07:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:07:49,399 INFO L225 Difference]: With dead ends: 50 [2020-09-24 15:07:49,399 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:07:49,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:07:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:07:49,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:07:49,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:07:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:07:49,401 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-09-24 15:07:49,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:07:49,402 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:07:49,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:07:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:07:49,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:07:49,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:07:49,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:07:49,460 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 15:07:49,460 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 15:07:49,460 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:07:49,461 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 15:07:49,461 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:07:49,461 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:07:49,461 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:07:49,461 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:07:49,462 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:07:49,462 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 15:07:49,462 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 15:07:49,462 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-24 15:07:49,462 INFO L271 CegarLoopResult]: At program point L27-2(lines 27 33) the Hoare annotation is: true [2020-09-24 15:07:49,463 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 37) no Hoare annotation was computed. [2020-09-24 15:07:49,463 INFO L271 CegarLoopResult]: At program point L27-3(lines 27 33) the Hoare annotation is: true [2020-09-24 15:07:49,463 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 15:07:49,463 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 15:07:49,463 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 15:07:49,463 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 15:07:49,464 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 15:07:49,464 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 15:07:49,464 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 15:07:49,464 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-24 15:07:49,464 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 15:07:49,464 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 15:07:49,465 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 15:07:49,465 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 15:07:49,465 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 15:07:49,465 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 15:07:49,465 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 15:07:49,465 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 37) no Hoare annotation was computed. [2020-09-24 15:07:49,466 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 15:07:49,466 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 37) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 15:07:49,466 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 15:07:49,466 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 15:07:49,466 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 15:07:49,466 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 15:07:49,467 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 15:07:49,467 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-09-24 15:07:49,467 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 15:07:49,467 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 15:07:49,467 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-24 15:07:49,467 INFO L271 CegarLoopResult]: At program point L18-6(lines 18 20) the Hoare annotation is: true [2020-09-24 15:07:49,468 INFO L268 CegarLoopResult]: For program point L18-7(lines 18 20) no Hoare annotation was computed. [2020-09-24 15:07:49,468 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 15:07:49,468 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-24 15:07:49,468 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-24 15:07:49,468 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 15:07:49,468 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-24 15:07:49,469 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-24 15:07:49,469 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-24 15:07:49,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:07:49 BoogieIcfgContainer [2020-09-24 15:07:49,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:07:49,487 INFO L168 Benchmark]: Toolchain (without parser) took 2562.65 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 102.5 MB in the beginning and 173.5 MB in the end (delta: -71.1 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:49,488 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:07:49,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.91 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 91.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:49,490 INFO L168 Benchmark]: Boogie Preprocessor took 122.72 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.7 MB in the beginning and 180.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:49,491 INFO L168 Benchmark]: RCFGBuilder took 441.96 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 162.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:49,492 INFO L168 Benchmark]: TraceAbstraction took 1657.90 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 162.2 MB in the beginning and 173.5 MB in the end (delta: -11.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:07:49,496 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 326.91 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 91.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.72 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.7 MB in the beginning and 180.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.96 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 162.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1657.90 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 162.2 MB in the beginning and 173.5 MB in the end (delta: -11.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 40 SDslu, 205 SDs, 0 SdLazy, 200 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 19 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 6514 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/10 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...