/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 DAGSIZE --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/floats-cbmc-regression/float1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 19:14:27,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:14:27,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:14:27,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 19:14:27,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 19:14:27,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 19:14:27,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 19:14:27,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 19:14:27,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 19:14:27,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 19:14:27,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 19:14:27,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 19:14:27,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:14:27,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:14:27,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:14:27,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:14:27,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:14:27,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:14:27,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:14:27,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:14:27,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:14:27,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:14:27,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:14:27,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:14:27,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 19:14:27,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 19:14:27,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 19:14:27,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 19:14:27,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 19:14:27,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 19:14:27,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 19:14:27,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 19:14:27,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 19:14:27,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 19:14:27,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 19:14:27,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 19:14:27,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 19:14:27,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 19:14:27,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 19:14:27,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 19:14:27,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 19:14:27,685 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 19:14:27,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:14:27,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:14:27,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:14:27,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:14:27,717 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:14:27,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:14:27,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:14:27,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:14:27,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:14:27,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:14:27,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:14:27,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:14:27,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:14:27,723 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:14:27,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:14:27,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:14:27,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:14:27,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:14:27,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:14:27,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:14:27,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:14:27,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:14:27,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:14:27,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:14:27,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:14:27,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:14:27,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:27,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:14:27,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:14:27,730 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 -> DAGSIZE 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 19:14:27,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:14:28,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:14:28,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:14:28,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:14:28,014 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:14:28,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-07-21 19:14:28,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0a504b3/e7ede71f6d0c4401beb78a7987714dd5/FLAGd1ce6441a [2020-07-21 19:14:28,505 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:14:28,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-07-21 19:14:28,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0a504b3/e7ede71f6d0c4401beb78a7987714dd5/FLAGd1ce6441a [2020-07-21 19:14:28,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0a504b3/e7ede71f6d0c4401beb78a7987714dd5 [2020-07-21 19:14:28,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:14:28,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:14:28,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:14:28,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:14:28,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:14:28,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:28" (1/1) ... [2020-07-21 19:14:28,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ebf575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:28, skipping insertion in model container [2020-07-21 19:14:28,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:28" (1/1) ... [2020-07-21 19:14:28,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:14:28,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:14:29,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:14:29,076 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:14:29,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:14:29,107 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:14:29,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:29 WrapperNode [2020-07-21 19:14:29,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:14:29,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:14:29,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:14:29,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:14:29,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:29" (1/1) ... [2020-07-21 19:14:29,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:29" (1/1) ... [2020-07-21 19:14:29,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:29" (1/1) ... [2020-07-21 19:14:29,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:29" (1/1) ... [2020-07-21 19:14:29,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:29" (1/1) ... [2020-07-21 19:14:29,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:29" (1/1) ... [2020-07-21 19:14:29,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:29" (1/1) ... [2020-07-21 19:14:29,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:14:29,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:14:29,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:14:29,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:14:29,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:29" (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 19:14:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:14:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:14:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:14:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:14:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:14:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:14:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:14:29,413 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:14:29,414 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 19:14:29,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:29 BoogieIcfgContainer [2020-07-21 19:14:29,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:14:29,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:14:29,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:14:29,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:14:29,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:14:28" (1/3) ... [2020-07-21 19:14:29,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301bdb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:14:29, skipping insertion in model container [2020-07-21 19:14:29,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:29" (2/3) ... [2020-07-21 19:14:29,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301bdb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:14:29, skipping insertion in model container [2020-07-21 19:14:29,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:29" (3/3) ... [2020-07-21 19:14:29,424 INFO L109 eAbstractionObserver]: Analyzing ICFG float1.c [2020-07-21 19:14:29,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:14:29,438 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-21 19:14:29,449 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-21 19:14:29,473 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:14:29,473 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:14:29,473 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:14:29,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:14:29,474 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:14:29,474 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:14:29,474 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:14:29,474 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:14:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-07-21 19:14:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-21 19:14:29,493 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:14:29,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:14:29,494 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:14:29,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:14:29,500 INFO L82 PathProgramCache]: Analyzing trace with hash 703471866, now seen corresponding path program 1 times [2020-07-21 19:14:29,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:14:29,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067292217] [2020-07-21 19:14:29,509 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 19:14:29,555 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:14:29,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 19:14:29,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:14:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 19:14:29,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:14:29,579 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 19:14:29,579 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 19:14:29,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:29,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:14:29 BoogieIcfgContainer [2020-07-21 19:14:29,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 19:14:29,817 INFO L168 Benchmark]: Toolchain (without parser) took 939.17 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 102.4 MB in the beginning and 159.7 MB in the end (delta: -57.4 MB). Peak memory consumption was 842.1 kB. Max. memory is 7.1 GB. [2020-07-21 19:14:29,818 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 119.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 19:14:29,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.25 ms. Allocated memory is still 145.2 MB. Free memory was 102.0 MB in the beginning and 92.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:29,819 INFO L168 Benchmark]: Boogie Preprocessor took 27.82 ms. Allocated memory is still 145.2 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:29,821 INFO L168 Benchmark]: RCFGBuilder took 280.03 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 91.3 MB in the beginning and 173.3 MB in the end (delta: -82.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:29,821 INFO L168 Benchmark]: TraceAbstraction took 395.96 ms. Allocated memory is still 203.4 MB. Free memory was 172.6 MB in the beginning and 159.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:29,825 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 145.2 MB. Free memory was 120.2 MB in the beginning and 119.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.25 ms. Allocated memory is still 145.2 MB. Free memory was 102.0 MB in the beginning and 92.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.82 ms. Allocated memory is still 145.2 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 280.03 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 91.3 MB in the beginning and 173.3 MB in the end (delta: -82.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 395.96 ms. Allocated memory is still 203.4 MB. Free memory was 172.6 MB in the beginning and 159.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 8, overapproximation of someBinaryArithmeticDOUBLEoperation at line 7, overapproximation of to_real at line 6. Possible FailurePath: [L3] double x; [L4] int y; [L6] x=2 [L7] x-=0.6 [L8] y=x [L10] COND TRUE !(y==1) VAL [y=0] [L10] __VERIFIER_error() VAL [y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...