/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-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:44:11,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:44:11,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:44:11,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:44:11,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:44:11,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:44:11,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:44:11,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:44:11,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:44:11,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:44:11,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:44:11,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:44:11,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:44:11,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:44:11,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:44:11,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:44:11,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:44:11,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:44:11,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:44:11,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:44:11,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:44:11,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:44:11,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:44:11,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:44:11,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:44:11,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:44:11,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:44:11,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:44:11,188 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 23:44:11,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:44:11,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:44:11,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:44:11,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:44:11,205 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:44:11,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:44:11,205 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:44:11,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:44:11,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:44:11,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:44:11,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:44:11,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:44:11,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:44:11,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:44:11,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:44:11,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:44:11,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:44:11,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:44:11,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:44:11,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:44:11,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:44:11,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:44:11,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:44:11,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:44:11,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:44:11,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:44:11,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:44:11,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:44:11,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:44:11,211 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 23:44:11,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:44:11,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:44:11,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:44:11,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:44:11,577 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:44:11,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2020-07-19 23:44:11,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785e22837/ed2fdb9117cf4e56a1529e0ff55880e2/FLAGc8fcd849f [2020-07-19 23:44:12,110 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:44:12,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2020-07-19 23:44:12,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785e22837/ed2fdb9117cf4e56a1529e0ff55880e2/FLAGc8fcd849f [2020-07-19 23:44:12,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785e22837/ed2fdb9117cf4e56a1529e0ff55880e2 [2020-07-19 23:44:12,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:44:12,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:44:12,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:44:12,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:44:12,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:44:12,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:44:12" (1/1) ... [2020-07-19 23:44:12,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1682d26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12, skipping insertion in model container [2020-07-19 23:44:12,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:44:12" (1/1) ... [2020-07-19 23:44:12,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:44:12,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:44:12,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:44:12,693 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:44:12,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:44:12,722 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:44:12,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12 WrapperNode [2020-07-19 23:44:12,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:44:12,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:44:12,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:44:12,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:44:12,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12" (1/1) ... [2020-07-19 23:44:12,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12" (1/1) ... [2020-07-19 23:44:12,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12" (1/1) ... [2020-07-19 23:44:12,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12" (1/1) ... [2020-07-19 23:44:12,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12" (1/1) ... [2020-07-19 23:44:12,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12" (1/1) ... [2020-07-19 23:44:12,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12" (1/1) ... [2020-07-19 23:44:12,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:44:12,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:44:12,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:44:12,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:44:12,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12" (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 23:44:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:44:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:44:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:44:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:44:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:44:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:44:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:44:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:44:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:44:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:44:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:44:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:44:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:44:13,107 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:44:13,108 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:44:13,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:44:13 BoogieIcfgContainer [2020-07-19 23:44:13,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:44:13,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:44:13,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:44:13,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:44:13,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:44:12" (1/3) ... [2020-07-19 23:44:13,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47929013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:44:13, skipping insertion in model container [2020-07-19 23:44:13,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:44:12" (2/3) ... [2020-07-19 23:44:13,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47929013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:44:13, skipping insertion in model container [2020-07-19 23:44:13,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:44:13" (3/3) ... [2020-07-19 23:44:13,128 INFO L109 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2020-07-19 23:44:13,144 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:44:13,154 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:44:13,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:44:13,225 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:44:13,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:44:13,225 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:44:13,226 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:44:13,226 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:44:13,226 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:44:13,226 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:44:13,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:44:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-19 23:44:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-19 23:44:13,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:44:13,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:44:13,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:44:13,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:44:13,258 INFO L82 PathProgramCache]: Analyzing trace with hash -677001103, now seen corresponding path program 1 times [2020-07-19 23:44:13,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:44:13,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120629011] [2020-07-19 23:44:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@25a6b143 [2020-07-19 23:44:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:44:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:44:13,585 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 23:44:13,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120629011] [2020-07-19 23:44:13,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:44:13,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:44:13,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925157914] [2020-07-19 23:44:13,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:44:13,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:44:13,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:44:13,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:44:13,614 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2020-07-19 23:44:13,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:44:13,749 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-07-19 23:44:13,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:44:13,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-07-19 23:44:13,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:44:13,761 INFO L225 Difference]: With dead ends: 41 [2020-07-19 23:44:13,762 INFO L226 Difference]: Without dead ends: 14 [2020-07-19 23:44:13,766 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 23:44:13,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-19 23:44:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-19 23:44:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-19 23:44:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-19 23:44:13,810 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-19 23:44:13,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:44:13,810 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-19 23:44:13,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:44:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-19 23:44:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 23:44:13,812 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:44:13,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:44:13,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:44:13,813 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:44:13,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:44:13,814 INFO L82 PathProgramCache]: Analyzing trace with hash 523340046, now seen corresponding path program 1 times [2020-07-19 23:44:13,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:44:13,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097682003] [2020-07-19 23:44:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@25a6b143 [2020-07-19 23:44:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:44:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:44:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:44:13,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097682003] [2020-07-19 23:44:13,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527308185] [2020-07-19 23:44:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@41ce08e5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:44:14,019 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@41ce08e5 issued 3 check-sat command(s) [2020-07-19 23:44:14,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:44:14,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-19 23:44:14,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:44:14,160 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:44:14,193 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:44:14,205 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:44:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:44:14,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:44:14,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-19 23:44:14,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354131971] [2020-07-19 23:44:14,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 23:44:14,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:44:14,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 23:44:14,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-07-19 23:44:14,253 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2020-07-19 23:44:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:44:14,370 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-19 23:44:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:44:14,371 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-07-19 23:44:14,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:44:14,372 INFO L225 Difference]: With dead ends: 20 [2020-07-19 23:44:14,373 INFO L226 Difference]: Without dead ends: 15 [2020-07-19 23:44:14,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-07-19 23:44:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-19 23:44:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-19 23:44:14,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-19 23:44:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-19 23:44:14,393 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-07-19 23:44:14,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:44:14,394 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-19 23:44:14,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 23:44:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-19 23:44:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 23:44:14,396 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:44:14,396 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:44:14,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 23:44:14,609 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:44:14,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:44:14,611 INFO L82 PathProgramCache]: Analyzing trace with hash -920789999, now seen corresponding path program 2 times [2020-07-19 23:44:14,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:44:14,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588096429] [2020-07-19 23:44:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@25a6b143 [2020-07-19 23:44:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:44:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:44:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:44:14,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588096429] [2020-07-19 23:44:14,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613127595] [2020-07-19 23:44:14,792 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76fb14f5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:44:14,840 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76fb14f5 issued 4 check-sat command(s) [2020-07-19 23:44:14,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:44:14,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-19 23:44:14,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:44:14,964 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:44:14,968 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:44:14,978 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:44:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:44:15,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:44:15,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-19 23:44:15,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565284383] [2020-07-19 23:44:15,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 23:44:15,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:44:15,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 23:44:15,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:44:15,014 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 13 states. [2020-07-19 23:44:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:44:15,234 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-19 23:44:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:44:15,234 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-07-19 23:44:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:44:15,235 INFO L225 Difference]: With dead ends: 17 [2020-07-19 23:44:15,235 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:44:15,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-07-19 23:44:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:44:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:44:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:44:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:44:15,237 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-07-19 23:44:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:44:15,237 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:44:15,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 23:44:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:44:15,238 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:44:15,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:44:15,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:44:15,586 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 23:44:15,586 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:44:15,586 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:44:15,586 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:44:15,586 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:44:15,587 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:44:15,587 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:44:15,587 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-19 23:44:15,587 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:44:15,587 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:44:15,588 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-07-19 23:44:15,588 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-19 23:44:15,588 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 27) no Hoare annotation was computed. [2020-07-19 23:44:15,588 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 24) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= main_~res~0 .cse0) (<= .cse1 .cse0))) [2020-07-19 23:44:15,588 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-19 23:44:15,589 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 24) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0))) (let ((.cse3 (<= .cse1 main_~res~0)) (.cse4 (<= main_~res~0 .cse1))) (or (let ((.cse0 (+ main_~a~0 1))) (and (<= .cse0 main_~res~0) (<= main_~b~0 1) (<= main_~b~0 (+ main_~cnt~0 1)) (<= main_~res~0 .cse0) (< 0 main_~b~0))) (let ((.cse2 (+ main_~res~0 main_~cnt~0))) (and (<= .cse1 .cse2) .cse3 .cse4 (<= .cse2 .cse1))) (and .cse3 .cse4 (= main_~cnt~0 main_~b~0))))) [2020-07-19 23:44:15,589 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-19 23:44:15,589 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 27) no Hoare annotation was computed. [2020-07-19 23:44:15,589 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-19 23:44:15,589 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-19 23:44:15,590 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-19 23:44:15,590 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-19 23:44:15,590 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-19 23:44:15,590 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-19 23:44:15,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:44:15 BoogieIcfgContainer [2020-07-19 23:44:15,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:44:15,613 INFO L168 Benchmark]: Toolchain (without parser) took 3125.74 ms. Allocated memory was 146.3 MB in the beginning and 235.4 MB in the end (delta: 89.1 MB). Free memory was 104.1 MB in the beginning and 126.3 MB in the end (delta: -22.2 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:44:15,614 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-19 23:44:15,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.41 ms. Allocated memory is still 146.3 MB. Free memory was 103.9 MB in the beginning and 94.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-19 23:44:15,616 INFO L168 Benchmark]: Boogie Preprocessor took 28.28 ms. Allocated memory is still 146.3 MB. Free memory was 94.3 MB in the beginning and 92.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-19 23:44:15,617 INFO L168 Benchmark]: RCFGBuilder took 361.86 ms. Allocated memory was 146.3 MB in the beginning and 201.3 MB in the end (delta: 55.1 MB). Free memory was 92.7 MB in the beginning and 168.2 MB in the end (delta: -75.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-19 23:44:15,618 INFO L168 Benchmark]: TraceAbstraction took 2493.97 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 167.5 MB in the beginning and 126.3 MB in the end (delta: 41.3 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. [2020-07-19 23:44:15,622 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 146.3 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 234.41 ms. Allocated memory is still 146.3 MB. Free memory was 103.9 MB in the beginning and 94.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.28 ms. Allocated memory is still 146.3 MB. Free memory was 94.3 MB in the beginning and 92.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.86 ms. Allocated memory was 146.3 MB in the beginning and 201.3 MB in the end (delta: 55.1 MB). Free memory was 92.7 MB in the beginning and 168.2 MB in the end (delta: -75.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2493.97 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 167.5 MB in the beginning and 126.3 MB in the end (delta: 41.3 MB). Peak memory consumption was 75.3 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: 21]: Loop Invariant Derived loop invariant: (a + b <= res + cnt && res <= a + b) && res + cnt <= a + b - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 22 SDslu, 129 SDs, 0 SdLazy, 100 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 87 HoareAnnotationTreeSize, 11 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 66 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 3737 SizeOfPredicates, 6 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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...