/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:24:26,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:24:26,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:24:26,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:24:26,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:24:26,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:24:26,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:24:26,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:24:26,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:24:26,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:24:26,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:24:26,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:24:26,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:24:26,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:24:26,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:24:26,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:24:26,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:24:26,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:24:26,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:24:26,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:24:26,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:24:26,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:24:26,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:24:26,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:24:26,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:24:26,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:24:26,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:24:26,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:24:26,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:24:26,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:24:26,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:24:26,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:24:26,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:24:26,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:24:26,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:24:26,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:24:26,835 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:24:26,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:24:26,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:24:26,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:24:26,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:24:26,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:24:26,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:24:26,837 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:24:27,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:24:27,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:24:27,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:24:27,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:24:27,231 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:24:27,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-11-07 00:24:27,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c8322b1/687cbe4ff0fa48fa8ee879652d424a9e/FLAG041246d1e [2020-11-07 00:24:27,996 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:24:27,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-11-07 00:24:28,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c8322b1/687cbe4ff0fa48fa8ee879652d424a9e/FLAG041246d1e [2020-11-07 00:24:28,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c8322b1/687cbe4ff0fa48fa8ee879652d424a9e [2020-11-07 00:24:28,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:24:28,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:24:28,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:28,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:24:28,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:24:28,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:28" (1/1) ... [2020-11-07 00:24:28,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be0b4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28, skipping insertion in model container [2020-11-07 00:24:28,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:28" (1/1) ... [2020-11-07 00:24:28,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:24:28,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:24:28,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:28,695 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:24:28,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:28,743 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:24:28,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28 WrapperNode [2020-11-07 00:24:28,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:28,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:24:28,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:24:28,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:24:28,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28" (1/1) ... [2020-11-07 00:24:28,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28" (1/1) ... [2020-11-07 00:24:28,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28" (1/1) ... [2020-11-07 00:24:28,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28" (1/1) ... [2020-11-07 00:24:28,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28" (1/1) ... [2020-11-07 00:24:28,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28" (1/1) ... [2020-11-07 00:24:28,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28" (1/1) ... [2020-11-07 00:24:28,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:24:28,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:24:28,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:24:28,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:24:28,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28" (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 [2020-11-07 00:24:28,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:24:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:24:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:24:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-07 00:24:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-11-07 00:24:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-11-07 00:24:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-11-07 00:24:28,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:24:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:24:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:24:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:24:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:24:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-11-07 00:24:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-07 00:24:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-11-07 00:24:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:24:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:24:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:24:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-11-07 00:24:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-11-07 00:24:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:24:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:24:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:24:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:24:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:24:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:24:29,298 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:24:29,299 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 00:24:29,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:29 BoogieIcfgContainer [2020-11-07 00:24:29,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:24:29,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:24:29,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:24:29,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:24:29,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:24:28" (1/3) ... [2020-11-07 00:24:29,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a981320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:29, skipping insertion in model container [2020-11-07 00:24:29,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:28" (2/3) ... [2020-11-07 00:24:29,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a981320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:29, skipping insertion in model container [2020-11-07 00:24:29,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:29" (3/3) ... [2020-11-07 00:24:29,320 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2020-11-07 00:24:29,338 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:24:29,342 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:24:29,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:24:29,394 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:24:29,394 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:24:29,395 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:24:29,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:24:29,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:24:29,395 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:24:29,396 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:24:29,396 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:24:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-11-07 00:24:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 00:24:29,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:29,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:24:29,449 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:29,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash -843828329, now seen corresponding path program 1 times [2020-11-07 00:24:29,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:29,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681763962] [2020-11-07 00:24:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:29,573 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:24:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:29,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:24:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:29,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:24:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:24:30,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681763962] [2020-11-07 00:24:30,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:24:30,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:24:30,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395741964] [2020-11-07 00:24:30,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:24:30,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:24:30,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:24:30,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:24:30,059 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-11-07 00:24:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:24:30,382 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2020-11-07 00:24:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:24:30,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-11-07 00:24:30,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:24:30,395 INFO L225 Difference]: With dead ends: 185 [2020-11-07 00:24:30,395 INFO L226 Difference]: Without dead ends: 93 [2020-11-07 00:24:30,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:24:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-07 00:24:30,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-07 00:24:30,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-07 00:24:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-11-07 00:24:30,460 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 41 [2020-11-07 00:24:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:24:30,461 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-11-07 00:24:30,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:24:30,461 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-11-07 00:24:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-07 00:24:30,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:30,465 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, 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, 1, 1, 1] [2020-11-07 00:24:30,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:24:30,465 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:30,466 INFO L82 PathProgramCache]: Analyzing trace with hash 739942113, now seen corresponding path program 1 times [2020-11-07 00:24:30,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:30,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769487209] [2020-11-07 00:24:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:30,470 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:30,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:24:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:24:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:30,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:24:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:24:30,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769487209] [2020-11-07 00:24:30,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:24:30,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:24:30,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452707153] [2020-11-07 00:24:30,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:24:30,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:24:30,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:24:30,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:24:30,675 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 6 states. [2020-11-07 00:24:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:24:31,003 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2020-11-07 00:24:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:24:31,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-11-07 00:24:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:24:31,008 INFO L225 Difference]: With dead ends: 130 [2020-11-07 00:24:31,008 INFO L226 Difference]: Without dead ends: 98 [2020-11-07 00:24:31,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:24:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-07 00:24:31,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-11-07 00:24:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-07 00:24:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2020-11-07 00:24:31,030 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 55 [2020-11-07 00:24:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:24:31,031 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2020-11-07 00:24:31,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:24:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2020-11-07 00:24:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-07 00:24:31,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:31,034 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, 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, 1, 1, 1, 1, 1, 1] [2020-11-07 00:24:31,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:24:31,034 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1411870785, now seen corresponding path program 1 times [2020-11-07 00:24:31,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:31,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274796107] [2020-11-07 00:24:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:31,038 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:31,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:24:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:31,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:24:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:31,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:24:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:24:31,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274796107] [2020-11-07 00:24:31,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:24:31,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:24:31,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044688568] [2020-11-07 00:24:31,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:24:31,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:24:31,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:24:31,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:24:31,192 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 6 states. [2020-11-07 00:24:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:24:31,499 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2020-11-07 00:24:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:24:31,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-11-07 00:24:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:24:31,502 INFO L225 Difference]: With dead ends: 134 [2020-11-07 00:24:31,502 INFO L226 Difference]: Without dead ends: 102 [2020-11-07 00:24:31,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:24:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-07 00:24:31,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 97. [2020-11-07 00:24:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-07 00:24:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2020-11-07 00:24:31,518 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 58 [2020-11-07 00:24:31,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:24:31,518 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2020-11-07 00:24:31,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:24:31,519 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2020-11-07 00:24:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-07 00:24:31,521 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:31,521 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, 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, 1, 1, 1, 1, 1, 1] [2020-11-07 00:24:31,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:24:31,521 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:31,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:31,522 INFO L82 PathProgramCache]: Analyzing trace with hash -799991937, now seen corresponding path program 1 times [2020-11-07 00:24:31,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:31,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010935935] [2020-11-07 00:24:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:31,525 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:31,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:31,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:31,648 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:24:31,648 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:24:31,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:24:31,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:24:31 BoogieIcfgContainer [2020-11-07 00:24:31,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:24:31,673 INFO L168 Benchmark]: Toolchain (without parser) took 3315.05 ms. Allocated memory was 154.1 MB in the beginning and 186.6 MB in the end (delta: 32.5 MB). Free memory was 130.5 MB in the beginning and 147.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:31,674 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory was 128.5 MB in the beginning and 128.4 MB in the end (delta: 109.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:24:31,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.48 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 119.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:31,676 INFO L168 Benchmark]: Boogie Preprocessor took 46.38 ms. Allocated memory is still 154.1 MB. Free memory was 119.2 MB in the beginning and 117.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:31,677 INFO L168 Benchmark]: RCFGBuilder took 508.77 ms. Allocated memory is still 154.1 MB. Free memory was 117.5 MB in the beginning and 92.7 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:31,678 INFO L168 Benchmark]: TraceAbstraction took 2363.57 ms. Allocated memory was 154.1 MB in the beginning and 186.6 MB in the end (delta: 32.5 MB). Free memory was 92.3 MB in the beginning and 147.2 MB in the end (delta: -54.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:24:31,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory was 128.5 MB in the beginning and 128.4 MB in the end (delta: 109.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 380.48 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 119.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.38 ms. Allocated memory is still 154.1 MB. Free memory was 119.2 MB in the beginning and 117.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 508.77 ms. Allocated memory is still 154.1 MB. Free memory was 117.5 MB in the beginning and 92.7 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2363.57 ms. Allocated memory was 154.1 MB in the beginning and 186.6 MB in the end (delta: 32.5 MB). Free memory was 92.3 MB in the beginning and 147.2 MB in the end (delta: -54.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 77. Possible FailurePath: [L76] double x = 0.0; [L77] double y = -0.0; [L78] CALL, EXPR fmin_double(x, y) [L48] CALL, EXPR __fpclassify_double(x) [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] RET, EXPR __fpclassify_double(x) [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] RET, EXPR fmin_double(x, y) [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1232a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 303 SDtfs, 65 SDslu, 540 SDs, 0 SdLazy, 408 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...