/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:19:15,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:19:15,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:19:15,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:19:15,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:19:15,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:19:15,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:19:15,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:19:15,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:19:15,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:19:15,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:19:15,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:19:15,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:19:15,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:19:15,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:19:15,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:19:15,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:19:15,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:19:15,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:19:15,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:19:15,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:19:15,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:19:15,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:19:15,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:19:15,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 23:19:15,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:19:15,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:19:15,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:19:15,921 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 [2020-07-21 23:19:15,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:19:15,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:19:15,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:19:15,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:19:15,955 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:19:15,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:19:15,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:19:15,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:19:15,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:19:15,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:19:15,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:19:15,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:19:15,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:19:15,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:19:15,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:19:15,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:19:15,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:19:15,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:19:15,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:19:15,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:19:15,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:19:15,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:19:15,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:19:15,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:19:15,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:19:15,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:19:15,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:19:15,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:19:15,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:19:15,962 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 23:19:16,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:19:16,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:19:16,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:19:16,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:19:16,299 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:19:16,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-07-21 23:19:16,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab629462/da17bc33005a4afea7280374d180f52f/FLAGae7e93c4d [2020-07-21 23:19:16,818 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:19:16,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-07-21 23:19:16,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab629462/da17bc33005a4afea7280374d180f52f/FLAGae7e93c4d [2020-07-21 23:19:17,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab629462/da17bc33005a4afea7280374d180f52f [2020-07-21 23:19:17,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:19:17,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:19:17,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:19:17,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:19:17,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:19:17,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:19:17" (1/1) ... [2020-07-21 23:19:17,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16bce41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17, skipping insertion in model container [2020-07-21 23:19:17,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:19:17" (1/1) ... [2020-07-21 23:19:17,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:19:17,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:19:17,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:19:17,426 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:19:17,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:19:17,458 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:19:17,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17 WrapperNode [2020-07-21 23:19:17,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:19:17,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:19:17,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:19:17,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:19:17,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17" (1/1) ... [2020-07-21 23:19:17,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17" (1/1) ... [2020-07-21 23:19:17,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17" (1/1) ... [2020-07-21 23:19:17,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17" (1/1) ... [2020-07-21 23:19:17,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17" (1/1) ... [2020-07-21 23:19:17,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17" (1/1) ... [2020-07-21 23:19:17,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17" (1/1) ... [2020-07-21 23:19:17,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:19:17,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:19:17,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:19:17,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:19:17,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17" (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 [2020-07-21 23:19:17,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:19:17,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:19:17,627 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 23:19:17,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:19:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:19:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 23:19:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 23:19:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 23:19:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:19:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:19:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:19:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:19:17,874 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:19:17,876 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 23:19:17,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:19:17 BoogieIcfgContainer [2020-07-21 23:19:17,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:19:17,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:19:17,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:19:17,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:19:17,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:19:17" (1/3) ... [2020-07-21 23:19:17,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3754a32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:19:17, skipping insertion in model container [2020-07-21 23:19:17,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:19:17" (2/3) ... [2020-07-21 23:19:17,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3754a32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:19:17, skipping insertion in model container [2020-07-21 23:19:17,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:19:17" (3/3) ... [2020-07-21 23:19:17,893 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-07-21 23:19:17,906 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:19:17,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-21 23:19:17,938 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-21 23:19:17,970 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:19:17,970 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:19:17,970 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:19:17,970 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:19:17,971 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:19:17,971 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:19:17,971 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:19:17,971 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:19:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-21 23:19:17,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 23:19:17,999 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:19:18,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:19:18,001 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:19:18,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:19:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1747837512, now seen corresponding path program 1 times [2020-07-21 23:19:18,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:19:18,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433792062] [2020-07-21 23:19:18,018 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:19:18,095 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:19:18,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:19:18,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:19:18,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:19:18,157 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:19:18,164 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:19:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:19:18,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:19:18,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433792062] [2020-07-21 23:19:18,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:19:18,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:19:18,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369620128] [2020-07-21 23:19:18,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:19:18,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:19:18,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:19:18,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:19:18,213 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-07-21 23:19:18,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:19:18,287 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-07-21 23:19:18,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:19:18,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-21 23:19:18,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:19:18,300 INFO L225 Difference]: With dead ends: 30 [2020-07-21 23:19:18,300 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 23:19:18,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:19:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 23:19:18,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 23:19:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 23:19:18,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-07-21 23:19:18,345 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-07-21 23:19:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:19:18,346 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-07-21 23:19:18,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:19:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-21 23:19:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 23:19:18,347 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:19:18,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:19:18,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:19:18,563 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:19:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:19:18,564 INFO L82 PathProgramCache]: Analyzing trace with hash -339542086, now seen corresponding path program 1 times [2020-07-21 23:19:18,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:19:18,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342104149] [2020-07-21 23:19:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:19:18,608 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:19:18,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:19:18,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:19:18,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:19:18,628 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:19:18,634 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:19:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:19:18,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:19:18,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342104149] [2020-07-21 23:19:18,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:19:18,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:19:18,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145489214] [2020-07-21 23:19:18,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:19:18,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:19:18,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:19:18,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:19:18,651 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-07-21 23:19:18,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:19:18,692 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-07-21 23:19:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:19:18,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 23:19:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:19:18,694 INFO L225 Difference]: With dead ends: 19 [2020-07-21 23:19:18,694 INFO L226 Difference]: Without dead ends: 17 [2020-07-21 23:19:18,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:19:18,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-21 23:19:18,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-07-21 23:19:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 23:19:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-21 23:19:18,701 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-21 23:19:18,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:19:18,702 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-21 23:19:18,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:19:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-21 23:19:18,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 23:19:18,703 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:19:18,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:19:18,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:19:18,912 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:19:18,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:19:18,913 INFO L82 PathProgramCache]: Analyzing trace with hash 117666302, now seen corresponding path program 1 times [2020-07-21 23:19:18,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:19:18,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039406339] [2020-07-21 23:19:18,914 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:19:18,948 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:19:18,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:19:18,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 23:19:18,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:19:18,968 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:19:18,971 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:19:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:19:18,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:19:18,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039406339] [2020-07-21 23:19:18,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:19:18,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:19:18,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847527731] [2020-07-21 23:19:18,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:19:18,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:19:18,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:19:18,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:19:18,998 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-07-21 23:19:19,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:19:19,055 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-21 23:19:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:19:19,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-21 23:19:19,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:19:19,057 INFO L225 Difference]: With dead ends: 20 [2020-07-21 23:19:19,057 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:19:19,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:19:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:19:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:19:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:19:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:19:19,060 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-07-21 23:19:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:19:19,060 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:19:19,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:19:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:19:19,060 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:19:19,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:19:19,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:19:19,422 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:19:19,422 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:19:19,422 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:19:19,422 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:19:19,423 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 23:19:19,423 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:19:19,423 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:19:19,423 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-21 23:19:19,423 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 23:19:19,424 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-21 23:19:19,424 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-21 23:19:19,424 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-07-21 23:19:19,424 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-07-21 23:19:19,424 INFO L268 CegarLoopResult]: For program point L31(lines 31 87) no Hoare annotation was computed. [2020-07-21 23:19:19,424 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-07-21 23:19:19,425 INFO L264 CegarLoopResult]: At program point L93(lines 12 100) the Hoare annotation is: (<= 0 main_~main__i~0) [2020-07-21 23:19:19,425 INFO L268 CegarLoopResult]: For program point L60(lines 60 68) no Hoare annotation was computed. [2020-07-21 23:19:19,425 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 100) no Hoare annotation was computed. [2020-07-21 23:19:19,425 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 23:19:19,426 INFO L264 CegarLoopResult]: At program point L77(lines 50 85) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (< main_~main__i~0 main_~main__nlen~0) (<= 1 main_~__VERIFIER_assert__cond~0) (<= 0 main_~main__i~0)) [2020-07-21 23:19:19,426 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 100) no Hoare annotation was computed. [2020-07-21 23:19:19,426 INFO L268 CegarLoopResult]: For program point L44(lines 44 85) no Hoare annotation was computed. [2020-07-21 23:19:19,426 INFO L264 CegarLoopResult]: At program point L67(lines 37 87) the Hoare annotation is: (and (< main_~main__i~0 main_~main__nlen~0) (<= 1 main_~__VERIFIER_assert__cond~0) (<= 0 main_~main__i~0)) [2020-07-21 23:19:19,426 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-07-21 23:19:19,427 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 62) no Hoare annotation was computed. [2020-07-21 23:19:19,427 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 100) the Hoare annotation is: true [2020-07-21 23:19:19,427 INFO L268 CegarLoopResult]: For program point L24(lines 24 94) no Hoare annotation was computed. [2020-07-21 23:19:19,427 INFO L268 CegarLoopResult]: For program point L74(lines 74 83) no Hoare annotation was computed. [2020-07-21 23:19:19,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:19:19 BoogieIcfgContainer [2020-07-21 23:19:19,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:19:19,450 INFO L168 Benchmark]: Toolchain (without parser) took 2269.35 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 102.2 MB in the beginning and 102.4 MB in the end (delta: -152.7 kB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-07-21 23:19:19,451 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 23:19:19,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.74 ms. Allocated memory is still 138.4 MB. Free memory was 101.8 MB in the beginning and 91.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:19:19,453 INFO L168 Benchmark]: Boogie Preprocessor took 26.58 ms. Allocated memory is still 138.4 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-21 23:19:19,454 INFO L168 Benchmark]: RCFGBuilder took 396.24 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 90.3 MB in the beginning and 165.5 MB in the end (delta: -75.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-21 23:19:19,455 INFO L168 Benchmark]: TraceAbstraction took 1562.25 ms. Allocated memory is still 199.8 MB. Free memory was 164.9 MB in the beginning and 102.4 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-07-21 23:19:19,459 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.74 ms. Allocated memory is still 138.4 MB. Free memory was 101.8 MB in the beginning and 91.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.58 ms. Allocated memory is still 138.4 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.24 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 90.3 MB in the beginning and 165.5 MB in the end (delta: -75.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1562.25 ms. Allocated memory is still 199.8 MB. Free memory was 164.9 MB in the beginning and 102.4 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 62]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 <= main__i - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: ((1 <= __VERIFIER_assert__cond && main__i < main__nlen) && 1 <= __VERIFIER_assert__cond) && 0 <= main__i - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (main__i < main__nlen && 1 <= __VERIFIER_assert__cond) && 0 <= main__i - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 41 SDslu, 49 SDs, 0 SdLazy, 41 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 9 NumberOfFragments, 30 HoareAnnotationTreeSize, 7 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 673 SizeOfPredicates, 13 NumberOfNonLiveVariables, 134 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...