/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:31:56,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:31:56,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:31:56,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:31:56,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:31:56,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:31:56,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:31:56,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:31:56,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:31:56,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:31:56,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:31:56,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:31:56,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:31:56,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:31:56,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:31:56,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:31:57,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:31:57,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 00:31:57,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 00:31:57,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 00:31:57,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:31:57,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:31:57,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:31:57,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:31:57,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:31:57,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:31:57,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:31:57,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:31:57,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:31:57,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:31:57,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:31:57,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:31:57,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:31:57,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:31:57,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:31:57,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:31:57,068 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:31:57,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:31:57,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:31:57,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:31:57,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:31:57,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:31:57,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:31:57,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:31:57,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:31:57,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:31:57,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:31:57,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:31:57,540 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:31:57,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-10-24 00:31:57,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ea833cdc/f605fd6baa3b467cac7294023778c1f4/FLAG937fe4c30 [2020-10-24 00:31:58,202 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:31:58,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-10-24 00:31:58,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ea833cdc/f605fd6baa3b467cac7294023778c1f4/FLAG937fe4c30 [2020-10-24 00:31:58,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ea833cdc/f605fd6baa3b467cac7294023778c1f4 [2020-10-24 00:31:58,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:31:58,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:31:58,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:31:58,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:31:58,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:31:58,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:31:58" (1/1) ... [2020-10-24 00:31:58,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1d69c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58, skipping insertion in model container [2020-10-24 00:31:58,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:31:58" (1/1) ... [2020-10-24 00:31:58,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:31:58,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:31:58,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:31:58,877 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:31:58,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:31:58,927 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:31:58,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58 WrapperNode [2020-10-24 00:31:58,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:31:58,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:31:58,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:31:58,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:31:58,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58" (1/1) ... [2020-10-24 00:31:58,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58" (1/1) ... [2020-10-24 00:31:58,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58" (1/1) ... [2020-10-24 00:31:58,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58" (1/1) ... [2020-10-24 00:31:58,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58" (1/1) ... [2020-10-24 00:31:58,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58" (1/1) ... [2020-10-24 00:31:58,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58" (1/1) ... [2020-10-24 00:31:58,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:31:58,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:31:58,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:31:58,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:31:58,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58" (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 [2020-10-24 00:31:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:31:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:31:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:31:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-24 00:31:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-24 00:31:59,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-24 00:31:59,057 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-24 00:31:59,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:31:59,057 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:31:59,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:31:59,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:31:59,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:31:59,058 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-24 00:31:59,058 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-24 00:31:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 00:31:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:31:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:31:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-24 00:31:59,060 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-24 00:31:59,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:31:59,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 00:31:59,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:31:59,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:31:59,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:31:59,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:31:59,618 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:31:59,618 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-24 00:31:59,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:31:59 BoogieIcfgContainer [2020-10-24 00:31:59,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:31:59,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:31:59,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:31:59,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:31:59,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:31:58" (1/3) ... [2020-10-24 00:31:59,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@daa92dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:31:59, skipping insertion in model container [2020-10-24 00:31:59,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:31:58" (2/3) ... [2020-10-24 00:31:59,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@daa92dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:31:59, skipping insertion in model container [2020-10-24 00:31:59,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:31:59" (3/3) ... [2020-10-24 00:31:59,630 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-10-24 00:31:59,642 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:31:59,646 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:31:59,659 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:31:59,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:31:59,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:31:59,683 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:31:59,684 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:31:59,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:31:59,684 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:31:59,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:31:59,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:31:59,701 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-10-24 00:31:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-24 00:31:59,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:31:59,712 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] [2020-10-24 00:31:59,713 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:31:59,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:31:59,719 INFO L82 PathProgramCache]: Analyzing trace with hash 419516581, now seen corresponding path program 1 times [2020-10-24 00:31:59,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:31:59,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565274508] [2020-10-24 00:31:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:31:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:00,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:32:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:00,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:32:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 00:32:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:32:00,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565274508] [2020-10-24 00:32:00,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:32:00,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:32:00,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788413447] [2020-10-24 00:32:00,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:32:00,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:32:00,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:32:00,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:32:00,174 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 4 states. [2020-10-24 00:32:00,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:32:00,582 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2020-10-24 00:32:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:32:00,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-24 00:32:00,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:32:00,593 INFO L225 Difference]: With dead ends: 147 [2020-10-24 00:32:00,593 INFO L226 Difference]: Without dead ends: 74 [2020-10-24 00:32:00,597 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 [2020-10-24 00:32:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-24 00:32:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-24 00:32:00,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-24 00:32:00,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 73 transitions. [2020-10-24 00:32:00,647 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 73 transitions. Word has length 39 [2020-10-24 00:32:00,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:32:00,648 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 73 transitions. [2020-10-24 00:32:00,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:32:00,648 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 73 transitions. [2020-10-24 00:32:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-24 00:32:00,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:32:00,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:32:00,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:32:00,652 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:32:00,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:32:00,653 INFO L82 PathProgramCache]: Analyzing trace with hash 803630963, now seen corresponding path program 1 times [2020-10-24 00:32:00,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:32:00,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318594082] [2020-10-24 00:32:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:32:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:32:00,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:32:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:32:00,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:32:00,972 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:32:00,972 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:32:00,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:32:01,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:32:01 BoogieIcfgContainer [2020-10-24 00:32:01,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:32:01,067 INFO L168 Benchmark]: Toolchain (without parser) took 2491.86 ms. Allocated memory is still 158.3 MB. Free memory was 134.6 MB in the beginning and 106.7 MB in the end (delta: 27.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:01,069 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 102.5 MB in the beginning and 102.5 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:32:01,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.88 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 123.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:01,073 INFO L168 Benchmark]: Boogie Preprocessor took 49.65 ms. Allocated memory is still 158.3 MB. Free memory was 123.7 MB in the beginning and 122.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:01,075 INFO L168 Benchmark]: RCFGBuilder took 641.23 ms. Allocated memory is still 158.3 MB. Free memory was 121.8 MB in the beginning and 131.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:01,076 INFO L168 Benchmark]: TraceAbstraction took 1439.21 ms. Allocated memory is still 158.3 MB. Free memory was 131.0 MB in the beginning and 106.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:01,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 102.5 MB in the beginning and 102.5 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.88 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 123.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.65 ms. Allocated memory is still 158.3 MB. Free memory was 123.7 MB in the beginning and 122.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 641.23 ms. Allocated memory is still 158.3 MB. Free memory was 121.8 MB in the beginning and 131.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1439.21 ms. Allocated memory is still 158.3 MB. Free memory was 131.0 MB in the beginning and 106.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 25.4 MB. 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 bitwiseOr at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = -1.0 / 0.0; [L71] CALL, EXPR fabs_double(x) VAL [\old(x)=4294967318] [L47] __uint32_t high; VAL [\old(x)=4294967318, x=4294967318] [L49] ieee_double_shape_type gh_u; VAL [\old(x)=4294967318, gh_u={9:0}, x=4294967318] [L50] gh_u.value = (x) VAL [\old(x)=4294967318, gh_u={9:0}, x=4294967318] [L51] EXPR gh_u.parts.msw VAL [\old(x)=4294967318, gh_u={9:0}, gh_u.parts.msw=4294967296, x=4294967318] [L51] (high) = gh_u.parts.msw VAL [(high) = gh_u.parts.msw=4294967303, \old(x)=4294967318, gh_u={9:0}, gh_u.parts.msw=4294967296, high=0, x=4294967318] [L54] ieee_double_shape_type sh_u; VAL [\old(x)=4294967318, high=0, sh_u={10:0}, x=4294967318] [L55] sh_u.value = (x) VAL [\old(x)=4294967318, high=0, sh_u={10:0}, x=4294967318] [L56] sh_u.parts.msw = (high & 0x7fffffff) VAL [\old(x)=4294967318, high=0, sh_u={10:0}, x=4294967318] [L57] EXPR sh_u.value VAL [\old(x)=4294967318, high=0, sh_u={10:0}, sh_u.value=4294967318, x=4294967318] [L57] (x) = sh_u.value VAL [(x) = sh_u.value=4294967299, (x) = sh_u.value=4294967314, \old(x)=4294967318, high=0, sh_u={10:0}, sh_u.value=4294967318, x=4294967318] [L59] return x; VAL [\old(x)=4294967318, \result=4294967318, high=0, x=4294967318] [L71] RET, EXPR fabs_double(x) VAL [fabs_double(x)=4294967318, x=4294967318] [L71] double res = fabs_double(x); VAL [fabs_double(x)=4294967318, res=4294967318, x=4294967318] [L74] CALL, EXPR isinf_double(res) VAL [\old(x)=4294967318] [L33] __int32_t hx, lx; VAL [\old(x)=4294967318, x=4294967318] [L35] ieee_double_shape_type ew_u; VAL [\old(x)=4294967318, ew_u={3:0}, x=4294967318] [L36] ew_u.value = (x) VAL [\old(x)=4294967318, ew_u={3:0}, x=4294967318] [L37] EXPR ew_u.parts.msw VAL [\old(x)=4294967318, ew_u={3:0}, ew_u.parts.msw=4294967294, x=4294967318] [L37] (hx) = ew_u.parts.msw VAL [(hx) = ew_u.parts.msw=4294967311, \old(x)=4294967318, ew_u={3:0}, ew_u.parts.msw=4294967294, hx=-2, x=4294967318] [L38] EXPR ew_u.parts.lsw VAL [\old(x)=4294967318, ew_u={3:0}, ew_u.parts.lsw=0, hx=-2, x=4294967318] [L38] (lx) = ew_u.parts.lsw VAL [\old(x)=4294967318, ew_u={3:0}, ew_u.parts.lsw=0, hx=-2, lx=0, x=4294967318] [L40] hx &= 0x7fffffff VAL [\old(x)=4294967318, lx=0, x=4294967318] [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 VAL [\old(x)=4294967318, hx=-1, lx=0, x=4294967318] [L42] hx = 0x7ff00000 - hx VAL [\old(x)=4294967318, hx=2146435073, lx=0, x=4294967318] [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=4294967318, \result=0, hx=2146435073, lx=0, x=4294967318] [L74] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=4294967318, x=4294967318] [L74] COND TRUE !isinf_double(res) VAL [isinf_double(res)=0, res=4294967318, x=4294967318] [L75] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1012b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 15 SDslu, 44 SDs, 0 SdLazy, 92 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 3496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...