/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:41:44,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:41:44,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:41:44,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:41:44,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:41:44,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:41:44,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:41:44,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:41:44,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:41:44,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:41:44,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:41:44,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:41:44,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:41:44,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:41:44,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:41:44,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:41:44,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:41:44,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:41:44,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:41:44,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:41:44,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:41:44,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:41:44,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:41:44,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:41:44,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:41:44,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:41:44,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:41:44,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:41:44,137 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 23:41:44,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:41:44,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:41:44,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:41:44,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:41:44,155 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:41:44,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:41:44,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:41:44,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:41:44,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:41:44,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:41:44,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:41:44,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:41:44,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:41:44,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:41:44,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:41:44,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:41:44,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:41:44,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:41:44,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:41:44,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:41:44,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:41:44,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:41:44,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:41:44,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:41:44,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:41:44,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:41:44,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:41:44,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:41:44,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:41:44,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:41:44,451 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:41:44,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:41:44,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:41:44,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:41:44,472 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:41:44,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-07-19 23:41:44,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6687ee8c0/d56e8e9348834f9c9cd7cc908fbe6e44/FLAGdc9e6adf1 [2020-07-19 23:41:45,002 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:41:45,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-07-19 23:41:45,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6687ee8c0/d56e8e9348834f9c9cd7cc908fbe6e44/FLAGdc9e6adf1 [2020-07-19 23:41:45,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6687ee8c0/d56e8e9348834f9c9cd7cc908fbe6e44 [2020-07-19 23:41:45,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:41:45,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:41:45,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:41:45,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:41:45,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:41:45,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:41:45" (1/1) ... [2020-07-19 23:41:45,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19115b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45, skipping insertion in model container [2020-07-19 23:41:45,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:41:45" (1/1) ... [2020-07-19 23:41:45,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:41:45,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:41:45,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:41:45,675 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:41:45,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:41:45,716 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:41:45,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45 WrapperNode [2020-07-19 23:41:45,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:41:45,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:41:45,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:41:45,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:41:45,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45" (1/1) ... [2020-07-19 23:41:45,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45" (1/1) ... [2020-07-19 23:41:45,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45" (1/1) ... [2020-07-19 23:41:45,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45" (1/1) ... [2020-07-19 23:41:45,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45" (1/1) ... [2020-07-19 23:41:45,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45" (1/1) ... [2020-07-19 23:41:45,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45" (1/1) ... [2020-07-19 23:41:45,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:41:45,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:41:45,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:41:45,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:41:45,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:41:45,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:41:45,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:41:45,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:41:45,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:41:45,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:41:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:41:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:41:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:41:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:41:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:41:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:41:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:41:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:41:46,174 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:41:46,174 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:41:46,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:41:46 BoogieIcfgContainer [2020-07-19 23:41:46,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:41:46,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:41:46,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:41:46,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:41:46,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:41:45" (1/3) ... [2020-07-19 23:41:46,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63019b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:41:46, skipping insertion in model container [2020-07-19 23:41:46,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:41:45" (2/3) ... [2020-07-19 23:41:46,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63019b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:41:46, skipping insertion in model container [2020-07-19 23:41:46,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:41:46" (3/3) ... [2020-07-19 23:41:46,190 INFO L109 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-07-19 23:41:46,202 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:41:46,209 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:41:46,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:41:46,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:41:46,269 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:41:46,270 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:41:46,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:41:46,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:41:46,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:41:46,271 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:41:46,271 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:41:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-19 23:41:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-19 23:41:46,310 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:41:46,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:41:46,313 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:41:46,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:41:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash 921445730, now seen corresponding path program 1 times [2020-07-19 23:41:46,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:41:46,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255413168] [2020-07-19 23:41:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6a0f087f [2020-07-19 23:41:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:41:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:41:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:41:46,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255413168] [2020-07-19 23:41:46,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:41:46,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:41:46,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154298297] [2020-07-19 23:41:46,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:41:46,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:41:46,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:41:46,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:41:46,663 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-07-19 23:41:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:41:46,832 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2020-07-19 23:41:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:41:46,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-19 23:41:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:41:46,844 INFO L225 Difference]: With dead ends: 51 [2020-07-19 23:41:46,844 INFO L226 Difference]: Without dead ends: 28 [2020-07-19 23:41:46,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:41:46,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-19 23:41:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-19 23:41:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-19 23:41:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-07-19 23:41:46,895 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 18 [2020-07-19 23:41:46,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:41:46,896 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-07-19 23:41:46,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:41:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-19 23:41:46,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-19 23:41:46,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:41:46,898 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:41:46,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:41:46,899 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:41:46,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:41:46,900 INFO L82 PathProgramCache]: Analyzing trace with hash 487181509, now seen corresponding path program 1 times [2020-07-19 23:41:46,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:41:46,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645314070] [2020-07-19 23:41:46,901 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6a0f087f [2020-07-19 23:41:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:41:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:41:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:41:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:41:47,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645314070] [2020-07-19 23:41:47,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:41:47,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:41:47,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90925078] [2020-07-19 23:41:47,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:41:47,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:41:47,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:41:47,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:41:47,056 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2020-07-19 23:41:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:41:47,158 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-07-19 23:41:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:41:47,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-19 23:41:47,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:41:47,162 INFO L225 Difference]: With dead ends: 38 [2020-07-19 23:41:47,163 INFO L226 Difference]: Without dead ends: 36 [2020-07-19 23:41:47,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:41:47,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-19 23:41:47,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-07-19 23:41:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-19 23:41:47,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-07-19 23:41:47,181 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 23 [2020-07-19 23:41:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:41:47,181 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-07-19 23:41:47,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:41:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-07-19 23:41:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-19 23:41:47,184 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:41:47,185 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:41:47,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:41:47,185 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:41:47,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:41:47,186 INFO L82 PathProgramCache]: Analyzing trace with hash 258938125, now seen corresponding path program 1 times [2020-07-19 23:41:47,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:41:47,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852091622] [2020-07-19 23:41:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6a0f087f [2020-07-19 23:41:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:41:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:41:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:41:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:41:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:41:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-19 23:41:47,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852091622] [2020-07-19 23:41:47,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066299151] [2020-07-19 23:41:47,424 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2bbe08b4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:41:47,505 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2bbe08b4 issued 4 check-sat command(s) [2020-07-19 23:41:47,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:41:47,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-19 23:41:47,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:41:47,675 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:41:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-19 23:41:47,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:41:47,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2020-07-19 23:41:47,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995657029] [2020-07-19 23:41:47,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 23:41:47,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:41:47,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 23:41:47,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:41:47,751 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states. [2020-07-19 23:41:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:41:47,990 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-07-19 23:41:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-19 23:41:47,991 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-07-19 23:41:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:41:47,992 INFO L225 Difference]: With dead ends: 41 [2020-07-19 23:41:47,992 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:41:47,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-07-19 23:41:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:41:47,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:41:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:41:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:41:47,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-07-19 23:41:47,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:41:47,995 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:41:47,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 23:41:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:41:47,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:41:48,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-19 23:41:48,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:41:48,350 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 23:41:48,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:41:48,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:41:48,351 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:41:48,351 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:41:48,351 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:41:48,351 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:41:48,351 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-19 23:41:48,351 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:41:48,352 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:41:48,352 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-07-19 23:41:48,352 INFO L268 CegarLoopResult]: For program point L27-1(lines 14 45) no Hoare annotation was computed. [2020-07-19 23:41:48,352 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 45) no Hoare annotation was computed. [2020-07-19 23:41:48,352 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-19 23:41:48,352 INFO L268 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-07-19 23:41:48,353 INFO L268 CegarLoopResult]: For program point L28(lines 14 45) no Hoare annotation was computed. [2020-07-19 23:41:48,353 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-07-19 23:41:48,353 INFO L268 CegarLoopResult]: For program point L29(lines 14 45) no Hoare annotation was computed. [2020-07-19 23:41:48,353 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-19 23:41:48,353 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 42) no Hoare annotation was computed. [2020-07-19 23:41:48,354 INFO L264 CegarLoopResult]: At program point L38-3(lines 38 42) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~p~0) (<= 1 main_~leader_len~0)) [2020-07-19 23:41:48,354 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 45) the Hoare annotation is: true [2020-07-19 23:41:48,354 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-07-19 23:41:48,354 INFO L271 CegarLoopResult]: At program point L43(lines 13 45) the Hoare annotation is: true [2020-07-19 23:41:48,355 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~p~0) (<= 1 main_~leader_len~0)) [2020-07-19 23:41:48,355 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~p~0) (<= 1 main_~leader_len~0)) [2020-07-19 23:41:48,355 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-19 23:41:48,355 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-19 23:41:48,356 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-19 23:41:48,356 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-19 23:41:48,356 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-19 23:41:48,356 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-19 23:41:48,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:41:48 BoogieIcfgContainer [2020-07-19 23:41:48,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:41:48,380 INFO L168 Benchmark]: Toolchain (without parser) took 2948.14 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 100.6 MB in the beginning and 154.7 MB in the end (delta: -54.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2020-07-19 23:41:48,382 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 23:41:48,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.47 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 90.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:41:48,384 INFO L168 Benchmark]: Boogie Preprocessor took 126.32 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.5 MB in the beginning and 180.3 MB in the end (delta: -89.9 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:41:48,385 INFO L168 Benchmark]: RCFGBuilder took 334.21 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 165.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:41:48,386 INFO L168 Benchmark]: TraceAbstraction took 2196.82 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 165.3 MB in the beginning and 154.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:41:48,391 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.47 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 90.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.32 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.5 MB in the beginning and 180.3 MB in the end (delta: -89.9 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.21 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 165.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2196.82 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 165.3 MB in the beginning and 154.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (p + 2 * ielen <= bufsize_0 + 2 * i && 1 <= p) && 1 <= leader_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 39 SDslu, 324 SDs, 0 SdLazy, 167 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, 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, 9 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 70 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 9578 SizeOfPredicates, 6 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 39/44 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...