/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:20:36,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:20:36,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:20:37,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:20:37,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:20:37,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:20:37,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:20:37,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:20:37,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:20:37,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:20:37,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:20:37,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:20:37,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:20:37,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:20:37,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:20:37,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:20:37,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:20:37,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:20:37,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:20:37,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:20:37,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:20:37,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:20:37,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:20:37,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:20:37,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:20:37,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:20:37,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:20:37,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:20:37,040 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 [2020-07-20 14:20:37,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:20:37,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:20:37,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:20:37,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:20:37,076 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:20:37,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:20:37,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:20:37,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:20:37,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:20:37,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:20:37,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:20:37,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:20:37,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:20:37,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:20:37,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:20:37,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:20:37,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:20:37,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:20:37,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:20:37,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:20:37,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:20:37,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:20:37,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:20:37,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:20:37,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:20:37,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:20:37,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:37,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:20:37,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:20:37,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> 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 [2020-07-20 14:20:37,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:20:37,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:20:37,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:20:37,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:20:37,499 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:20:37,500 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-07-20 14:20:37,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f0cf6e14/78124e5750a74d179a1e8e6f6815c377/FLAGab6e424d1 [2020-07-20 14:20:38,147 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:20:38,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-07-20 14:20:38,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f0cf6e14/78124e5750a74d179a1e8e6f6815c377/FLAGab6e424d1 [2020-07-20 14:20:38,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f0cf6e14/78124e5750a74d179a1e8e6f6815c377 [2020-07-20 14:20:38,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:20:38,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:20:38,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:20:38,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:20:38,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:20:38,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:20:38" (1/1) ... [2020-07-20 14:20:38,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4b94ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38, skipping insertion in model container [2020-07-20 14:20:38,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:20:38" (1/1) ... [2020-07-20 14:20:38,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:20:38,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:20:38,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:20:38,734 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:20:38,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:20:38,775 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:20:38,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38 WrapperNode [2020-07-20 14:20:38,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:20:38,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:20:38,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:20:38,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:20:38,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38" (1/1) ... [2020-07-20 14:20:38,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38" (1/1) ... [2020-07-20 14:20:38,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38" (1/1) ... [2020-07-20 14:20:38,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38" (1/1) ... [2020-07-20 14:20:38,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38" (1/1) ... [2020-07-20 14:20:38,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38" (1/1) ... [2020-07-20 14:20:38,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38" (1/1) ... [2020-07-20 14:20:38,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:20:38,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:20:38,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:20:38,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:20:38,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38" (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 [2020-07-20 14:20:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:20:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:20:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 14:20:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:20:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:20:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:20:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 14:20:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 14:20:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-20 14:20:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:20:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:20:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:20:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:20:39,279 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:20:39,279 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:20:39,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:20:39 BoogieIcfgContainer [2020-07-20 14:20:39,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:20:39,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:20:39,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:20:39,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:20:39,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:20:38" (1/3) ... [2020-07-20 14:20:39,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2061501f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:20:39, skipping insertion in model container [2020-07-20 14:20:39,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:20:38" (2/3) ... [2020-07-20 14:20:39,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2061501f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:20:39, skipping insertion in model container [2020-07-20 14:20:39,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:20:39" (3/3) ... [2020-07-20 14:20:39,292 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2020-07-20 14:20:39,305 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:20:39,315 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:20:39,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:20:39,364 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:20:39,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:20:39,365 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:20:39,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:20:39,366 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:20:39,367 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:20:39,367 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:20:39,367 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:20:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-20 14:20:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 14:20:39,395 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:20:39,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:20:39,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:20:39,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:20:39,406 INFO L82 PathProgramCache]: Analyzing trace with hash 900249630, now seen corresponding path program 1 times [2020-07-20 14:20:39,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:20:39,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393947628] [2020-07-20 14:20:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:39,504 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:20:39,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:20:39,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 14:20:39,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:20:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:20:39,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:20:39,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393947628] [2020-07-20 14:20:39,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:20:39,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 14:20:39,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48038099] [2020-07-20 14:20:39,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 14:20:39,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:20:39,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 14:20:39,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:20:39,616 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-20 14:20:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:20:39,671 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-07-20 14:20:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 14:20:39,675 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-20 14:20:39,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:20:39,700 INFO L225 Difference]: With dead ends: 30 [2020-07-20 14:20:39,705 INFO L226 Difference]: Without dead ends: 13 [2020-07-20 14:20:39,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:20:39,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-20 14:20:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-20 14:20:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-20 14:20:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-20 14:20:39,773 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2020-07-20 14:20:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:20:39,773 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-20 14:20:39,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 14:20:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-20 14:20:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 14:20:39,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:20:39,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:20:39,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:39,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:20:39,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:20:39,996 INFO L82 PathProgramCache]: Analyzing trace with hash 891014420, now seen corresponding path program 1 times [2020-07-20 14:20:39,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:20:39,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459917797] [2020-07-20 14:20:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:40,046 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:20:40,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:20:40,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:20:40,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:20:40,146 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:20:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:20:40,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:20:40,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459917797] [2020-07-20 14:20:40,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:20:40,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 14:20:40,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725372736] [2020-07-20 14:20:40,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 14:20:40,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:20:40,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 14:20:40,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:20:40,227 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2020-07-20 14:20:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:20:40,338 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-07-20 14:20:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:20:40,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-07-20 14:20:40,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:20:40,341 INFO L225 Difference]: With dead ends: 20 [2020-07-20 14:20:40,341 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 14:20:40,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:20:40,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 14:20:40,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 14:20:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 14:20:40,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-07-20 14:20:40,348 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2020-07-20 14:20:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:20:40,349 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-07-20 14:20:40,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 14:20:40,349 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-07-20 14:20:40,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 14:20:40,350 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:20:40,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:20:40,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:40,552 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:20:40,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:20:40,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1596010865, now seen corresponding path program 1 times [2020-07-20 14:20:40,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:20:40,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898562187] [2020-07-20 14:20:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:40,601 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:20:40,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:20:40,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 14:20:40,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:20:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:20:40,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:20:40,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898562187] [2020-07-20 14:20:40,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:20:40,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:20:40,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812346141] [2020-07-20 14:20:40,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:20:40,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:20:40,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:20:40,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:20:40,707 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2020-07-20 14:20:40,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:20:40,740 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-07-20 14:20:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:20:40,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 14:20:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:20:40,743 INFO L225 Difference]: With dead ends: 16 [2020-07-20 14:20:40,743 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:20:40,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:20:40,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:20:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:20:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:20:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:20:40,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-20 14:20:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:20:40,745 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:20:40,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:20:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:20:40,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:20:40,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:20:40,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:20:41,083 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 14:20:41,083 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:20:41,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:20:41,084 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:20:41,084 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:20:41,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:20:41,084 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 14:20:41,084 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 14:20:41,084 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 14:20:41,084 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 14:20:41,085 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 15 30) the Hoare annotation is: true [2020-07-20 14:20:41,085 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 15 30) no Hoare annotation was computed. [2020-07-20 14:20:41,085 INFO L268 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-07-20 14:20:41,085 INFO L264 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (= 1 main_~x~0) (< 0 (mod main_~y~0 4294967296))) [2020-07-20 14:20:41,085 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-07-20 14:20:41,085 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 27) the Hoare annotation is: (and (= 1 main_~x~0) (< 0 (mod main_~y~0 4294967296)) (<= (mod main_~y~0 4294967296) (mod main_~x~0 4294967296))) [2020-07-20 14:20:41,086 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 15 30) no Hoare annotation was computed. [2020-07-20 14:20:41,086 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2020-07-20 14:20:41,086 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-07-20 14:20:41,086 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 13) no Hoare annotation was computed. [2020-07-20 14:20:41,086 INFO L268 CegarLoopResult]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-07-20 14:20:41,086 INFO L268 CegarLoopResult]: For program point L9-2(lines 8 13) no Hoare annotation was computed. [2020-07-20 14:20:41,086 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-20 14:20:41,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:20:41 BoogieIcfgContainer [2020-07-20 14:20:41,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:20:41,105 INFO L168 Benchmark]: Toolchain (without parser) took 2676.05 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 106.3 MB in the beginning and 113.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:41,107 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 141.6 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 14:20:41,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.75 ms. Allocated memory is still 141.6 MB. Free memory was 105.9 MB in the beginning and 96.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:41,109 INFO L168 Benchmark]: Boogie Preprocessor took 41.69 ms. Allocated memory is still 141.6 MB. Free memory was 96.5 MB in the beginning and 95.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:41,110 INFO L168 Benchmark]: RCFGBuilder took 464.28 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.9 MB in the beginning and 171.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:41,111 INFO L168 Benchmark]: TraceAbstraction took 1818.01 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 113.2 MB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:20:41,116 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 141.6 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.75 ms. Allocated memory is still 141.6 MB. Free memory was 105.9 MB in the beginning and 96.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.69 ms. Allocated memory is still 141.6 MB. Free memory was 96.5 MB in the beginning and 95.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.28 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.9 MB in the beginning and 171.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1818.01 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 113.2 MB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 1 == x && 0 < y % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 8 SDslu, 31 SDs, 0 SdLazy, 31 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 9 PreInvPairs, 12 NumberOfFragments, 30 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 874 SizeOfPredicates, 2 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...