/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 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:55:28,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:55:28,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:55:28,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:55:28,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:55:28,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:55:28,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:55:28,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:55:28,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:55:28,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:55:28,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:55:28,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:55:28,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:55:28,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:55:28,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:55:28,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:55:28,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:55:28,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:55:28,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:55:28,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:55:28,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:55:28,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:55:28,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:55:28,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:55:28,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:55:28,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:55:28,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:55:28,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:55:28,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:55:28,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:55:28,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:55:28,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:55:28,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:55:28,651 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:55:28,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:55:28,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:55:28,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:55:28,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:55:28,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:55:28,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:55:28,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:55:28,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:55:28,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:55:28,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:55:28,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:55:28,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:55:28,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:55:28,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:55:28,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:55:28,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:55:28,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:55:28,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:55:28,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:55:28,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:55:28,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:55:28,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:28,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:55:28,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:55:28,656 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 -> 2 [2020-07-21 12:55:28,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:55:28,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:55:28,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:55:28,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:55:28,968 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:55:28,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-07-21 12:55:29,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fd1fab54/d2446bb9a05d4d1ea56573a4dcbe9200/FLAG641ef2fb7 [2020-07-21 12:55:29,485 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:55:29,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-07-21 12:55:29,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fd1fab54/d2446bb9a05d4d1ea56573a4dcbe9200/FLAG641ef2fb7 [2020-07-21 12:55:29,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fd1fab54/d2446bb9a05d4d1ea56573a4dcbe9200 [2020-07-21 12:55:29,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:55:29,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:55:29,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:29,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:55:29,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:55:29,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:29" (1/1) ... [2020-07-21 12:55:29,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ee8f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:29, skipping insertion in model container [2020-07-21 12:55:29,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:29" (1/1) ... [2020-07-21 12:55:29,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:55:29,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:55:30,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:30,131 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:55:30,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:30,265 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:55:30,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:30 WrapperNode [2020-07-21 12:55:30,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:30,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:55:30,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:55:30,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:55:30,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:30" (1/1) ... [2020-07-21 12:55:30,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:30" (1/1) ... [2020-07-21 12:55:30,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:30" (1/1) ... [2020-07-21 12:55:30,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:30" (1/1) ... [2020-07-21 12:55:30,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:30" (1/1) ... [2020-07-21 12:55:30,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:30" (1/1) ... [2020-07-21 12:55:30,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:30" (1/1) ... [2020-07-21 12:55:30,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:55:30,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:55:30,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:55:30,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:55:30,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:55:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:55:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:55:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-21 12:55:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-21 12:55:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-21 12:55:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:55:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:55:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 12:55:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-21 12:55:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:55:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 12:55:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:55:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:55:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-21 12:55:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-21 12:55:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:55:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:55:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:55:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 12:55:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:55:30,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:55:30,730 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 12:55:30,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:30 BoogieIcfgContainer [2020-07-21 12:55:30,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:55:30,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:55:30,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:55:30,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:55:30,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:55:29" (1/3) ... [2020-07-21 12:55:30,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e3f035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:30, skipping insertion in model container [2020-07-21 12:55:30,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:30" (2/3) ... [2020-07-21 12:55:30,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e3f035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:30, skipping insertion in model container [2020-07-21 12:55:30,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:30" (3/3) ... [2020-07-21 12:55:30,763 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-07-21 12:55:30,773 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:55:30,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:55:30,791 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:55:30,813 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:55:30,813 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:55:30,813 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:55:30,814 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:55:30,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:55:30,814 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:55:30,814 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:55:30,814 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:55:30,833 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-21 12:55:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 12:55:30,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:30,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:55:30,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:30,848 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-07-21 12:55:30,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:30,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052436605] [2020-07-21 12:55:30,857 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:30,972 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:30,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:55:30,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:55:30,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:55:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:55:31,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:55:31,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052436605] [2020-07-21 12:55:31,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:55:31,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:55:31,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409054202] [2020-07-21 12:55:31,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:55:31,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:55:31,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:55:31,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:55:31,036 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-07-21 12:55:31,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:55:31,065 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-07-21 12:55:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:55:31,067 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-21 12:55:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:55:31,078 INFO L225 Difference]: With dead ends: 79 [2020-07-21 12:55:31,078 INFO L226 Difference]: Without dead ends: 40 [2020-07-21 12:55:31,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:55:31,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-21 12:55:31,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-21 12:55:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-21 12:55:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-21 12:55:31,128 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-07-21 12:55:31,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:55:31,129 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-21 12:55:31,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:55:31,129 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-21 12:55:31,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 12:55:31,132 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:31,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:55:31,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:31,347 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:31,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-07-21 12:55:31,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:31,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358307573] [2020-07-21 12:55:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:31,426 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:31,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:55:31,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:55:31,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:55:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:55:31,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:55:31,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358307573] [2020-07-21 12:55:31,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:55:31,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:55:31,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519162426] [2020-07-21 12:55:31,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:55:31,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:55:31,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:55:31,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:55:31,495 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-21 12:55:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:55:31,543 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-21 12:55:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:55:31,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-21 12:55:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:55:31,547 INFO L225 Difference]: With dead ends: 59 [2020-07-21 12:55:31,547 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 12:55:31,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:55:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 12:55:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-21 12:55:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 12:55:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-21 12:55:31,572 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-07-21 12:55:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:55:31,572 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-21 12:55:31,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:55:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-21 12:55:31,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 12:55:31,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:31,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:55:31,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:31,795 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:31,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:31,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-07-21 12:55:31,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:31,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003390930] [2020-07-21 12:55:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:31,860 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:31,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:55:31,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:55:31,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:55:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:55:31,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:55:31,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003390930] [2020-07-21 12:55:31,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:55:31,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:55:31,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637649375] [2020-07-21 12:55:31,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:55:31,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:55:31,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:55:31,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:55:31,895 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2020-07-21 12:55:31,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:55:31,919 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-07-21 12:55:31,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:55:31,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-21 12:55:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:55:31,921 INFO L225 Difference]: With dead ends: 63 [2020-07-21 12:55:31,921 INFO L226 Difference]: Without dead ends: 48 [2020-07-21 12:55:31,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:55:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-21 12:55:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-21 12:55:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 12:55:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-21 12:55:31,931 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-07-21 12:55:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:55:31,931 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-21 12:55:31,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:55:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-21 12:55:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 12:55:31,933 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:31,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:55:32,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:32,148 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:32,149 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-07-21 12:55:32,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:32,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638727252] [2020-07-21 12:55:32,151 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:32,246 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:32,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:55:32,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:55:32,266 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:32,311 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:55:32,311 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:55:32,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:32,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:55:32 BoogieIcfgContainer [2020-07-21 12:55:32,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:55:32,564 INFO L168 Benchmark]: Toolchain (without parser) took 2669.22 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 102.3 MB in the beginning and 192.2 MB in the end (delta: -89.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:32,564 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 12:55:32,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.27 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 178.8 MB in the end (delta: -76.9 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:32,569 INFO L168 Benchmark]: Boogie Preprocessor took 47.00 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 176.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:32,570 INFO L168 Benchmark]: RCFGBuilder took 431.65 ms. Allocated memory is still 201.3 MB. Free memory was 176.8 MB in the beginning and 156.3 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:32,571 INFO L168 Benchmark]: TraceAbstraction took 1813.64 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 155.4 MB in the beginning and 192.2 MB in the end (delta: -36.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 12:55:32,575 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 371.27 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 178.8 MB in the end (delta: -76.9 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.00 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 176.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 431.65 ms. Allocated memory is still 201.3 MB. Free memory was 176.8 MB in the beginning and 156.3 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1813.64 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 155.4 MB in the beginning and 192.2 MB in the end (delta: -36.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; VAL [x=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0, \old(y)=4] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=8855, msw=-2147483649, x=0] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=8855, msw=-2147483649, x=0] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=8855, msw=-2147483649, x=0] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=0, \result=0, lsw=8855, msw=-2147483649, x=0] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4, __fpclassify_double(x)=0, x=0, y=4] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=0, \old(y)=4, \result=4, x=0, y=4] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4, x=0, y=4] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=4, x=0, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...