/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 0.2.1-dev-36cd7be [2021-02-23 22:33:52,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:33:52,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:33:52,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:33:52,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:33:52,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:33:52,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:33:52,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:33:52,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:33:52,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:33:52,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:33:52,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:33:52,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:33:52,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:33:52,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:33:52,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:33:52,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:33:52,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:33:52,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:33:52,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:33:52,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:33:52,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:33:52,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:33:52,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:33:52,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:33:52,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:33:52,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:33:52,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:33:52,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:33:52,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:33:52,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:33:52,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:33:52,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:33:52,620 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:33:52,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:33:52,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:33:52,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:33:52,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:33:52,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:33:52,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:33:52,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:33:53,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:33:53,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:33:53,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:33:53,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:33:53,039 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:33:53,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2021-02-23 22:33:53,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2231c2d5/ead00a2278a443c08f97d435c615f3b5/FLAG95963f75e [2021-02-23 22:33:53,662 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:33:53,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2021-02-23 22:33:53,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2231c2d5/ead00a2278a443c08f97d435c615f3b5/FLAG95963f75e [2021-02-23 22:33:54,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2231c2d5/ead00a2278a443c08f97d435c615f3b5 [2021-02-23 22:33:54,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:33:54,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:33:54,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:33:54,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:33:54,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:33:54,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:33:54" (1/1) ... [2021-02-23 22:33:54,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756bc583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54, skipping insertion in model container [2021-02-23 22:33:54,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:33:54" (1/1) ... [2021-02-23 22:33:54,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:33:54,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:33:54,295 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c[1640,1653] [2021-02-23 22:33:54,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:33:54,308 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:33:54,340 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c[1640,1653] [2021-02-23 22:33:54,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:33:54,359 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:33:54,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54 WrapperNode [2021-02-23 22:33:54,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:33:54,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:33:54,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:33:54,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:33:54,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54" (1/1) ... [2021-02-23 22:33:54,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54" (1/1) ... [2021-02-23 22:33:54,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54" (1/1) ... [2021-02-23 22:33:54,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54" (1/1) ... [2021-02-23 22:33:54,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54" (1/1) ... [2021-02-23 22:33:54,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54" (1/1) ... [2021-02-23 22:33:54,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54" (1/1) ... [2021-02-23 22:33:54,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:33:54,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:33:54,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:33:54,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:33:54,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54" (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 [2021-02-23 22:33:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:33:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:33:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:33:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 22:33:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-23 22:33:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-23 22:33:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-02-23 22:33:54,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:33:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:33:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:33:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:33:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:33:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 22:33:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-23 22:33:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:33:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:33:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:33:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-23 22:33:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-02-23 22:33:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:33:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:33:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:33:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:33:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:33:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:33:55,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:33:55,079 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-23 22:33:55,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:33:55 BoogieIcfgContainer [2021-02-23 22:33:55,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:33:55,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:33:55,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:33:55,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:33:55,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:33:54" (1/3) ... [2021-02-23 22:33:55,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfdaaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:33:55, skipping insertion in model container [2021-02-23 22:33:55,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:54" (2/3) ... [2021-02-23 22:33:55,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfdaaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:33:55, skipping insertion in model container [2021-02-23 22:33:55,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:33:55" (3/3) ... [2021-02-23 22:33:55,091 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2021-02-23 22:33:55,099 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:33:55,105 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:33:55,124 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:33:55,144 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:33:55,145 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:33:55,145 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:33:55,145 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:33:55,145 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:33:55,145 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:33:55,145 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:33:55,146 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:33:55,161 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-23 22:33:55,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 22:33:55,170 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:33:55,171 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] [2021-02-23 22:33:55,172 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:33:55,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:33:55,178 INFO L82 PathProgramCache]: Analyzing trace with hash 2068245769, now seen corresponding path program 1 times [2021-02-23 22:33:55,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:33:55,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272734487] [2021-02-23 22:33:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:33:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:33:55,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:55,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:55,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:55,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:55,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:33:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:33:55,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:55,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:55,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:33:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:33:55,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:55,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:55,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:55,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:55,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 22:33:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:33:55,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:55,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:55,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:55,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:33:55,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272734487] [2021-02-23 22:33:55,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:33:55,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:33:55,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595244607] [2021-02-23 22:33:55,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:33:55,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:33:55,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:33:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:33:55,485 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2021-02-23 22:33:55,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:33:55,780 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2021-02-23 22:33:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:33:55,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2021-02-23 22:33:55,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:33:55,790 INFO L225 Difference]: With dead ends: 125 [2021-02-23 22:33:55,790 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 22:33:55,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 22:33:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 22:33:55,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-23 22:33:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-23 22:33:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 63 transitions. [2021-02-23 22:33:55,856 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 63 transitions. Word has length 38 [2021-02-23 22:33:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:33:55,857 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 63 transitions. [2021-02-23 22:33:55,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:33:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 63 transitions. [2021-02-23 22:33:55,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-23 22:33:55,859 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:33:55,860 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] [2021-02-23 22:33:55,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:33:55,860 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:33:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:33:55,862 INFO L82 PathProgramCache]: Analyzing trace with hash -275805674, now seen corresponding path program 1 times [2021-02-23 22:33:55,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:33:55,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904452097] [2021-02-23 22:33:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:33:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:33:56,020 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:33:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:33:56,097 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:33:56,165 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:33:56,165 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:33:56,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:33:56,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:33:56 BoogieIcfgContainer [2021-02-23 22:33:56,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:33:56,239 INFO L168 Benchmark]: Toolchain (without parser) took 2209.14 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.3 MB in the beginning and 146.5 MB in the end (delta: -20.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-02-23 22:33:56,240 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:33:56,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.79 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:33:56,242 INFO L168 Benchmark]: Boogie Preprocessor took 47.31 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 113.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:33:56,242 INFO L168 Benchmark]: RCFGBuilder took 672.26 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 126.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 22:33:56,244 INFO L168 Benchmark]: TraceAbstraction took 1154.34 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.8 MB in the beginning and 146.5 MB in the end (delta: -20.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2021-02-23 22:33:56,248 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 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 314.79 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.31 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 113.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 672.26 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 126.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1154.34 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.8 MB in the beginning and 146.5 MB in the end (delta: -20.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 75]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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)=4294967309] [L47] __uint32_t high; VAL [\old(x)=4294967309, x=4294967309] [L49] ieee_double_shape_type gh_u; VAL [\old(x)=4294967309, gh_u={9:0}, x=4294967309] [L50] gh_u.value = (x) VAL [\old(x)=4294967309, gh_u={9:0}, x=4294967309] [L51] EXPR gh_u.parts.msw VAL [\old(x)=4294967309, gh_u={9:0}, gh_u.parts.msw=4294967307, x=4294967309] [L51] (high) = gh_u.parts.msw VAL [\old(x)=4294967309, gh_u={9:0}, gh_u.parts.msw=4294967307, high=11, x=4294967309] [L54] ieee_double_shape_type sh_u; VAL [\old(x)=4294967309, high=11, sh_u={10:0}, x=4294967309] [L55] sh_u.value = (x) VAL [\old(x)=4294967309, high=11, sh_u={10:0}, x=4294967309] [L56] sh_u.parts.msw = (high & 0x7fffffff) VAL [\old(x)=4294967309, high=11, sh_u={10:0}, x=4294967309] [L57] EXPR sh_u.value VAL [\old(x)=4294967309, high=11, sh_u={10:0}, sh_u.value=4294967309, x=4294967309] [L57] (x) = sh_u.value VAL [\old(x)=4294967309, high=11, sh_u={10:0}, sh_u.value=4294967309, x=4294967309] [L59] return x; VAL [\old(x)=4294967309, \result=4294967309, high=11, x=4294967309] [L71] RET, EXPR fabs_double(x) VAL [fabs_double(x)=4294967309, x=4294967309] [L71] double res = fabs_double(x); VAL [fabs_double(x)=4294967309, res=4294967309, x=4294967309] [L74] CALL, EXPR isinf_double(res) VAL [\old(x)=4294967309] [L33] __int32_t hx, lx; VAL [\old(x)=4294967309, x=4294967309] [L35] ieee_double_shape_type ew_u; VAL [\old(x)=4294967309, ew_u={3:0}, x=4294967309] [L36] ew_u.value = (x) VAL [\old(x)=4294967309, ew_u={3:0}, x=4294967309] [L37] EXPR ew_u.parts.msw VAL [\old(x)=4294967309, ew_u={3:0}, ew_u.parts.msw=0, x=4294967309] [L37] (hx) = ew_u.parts.msw VAL [\old(x)=4294967309, ew_u={3:0}, ew_u.parts.msw=0, hx=0, x=4294967309] [L38] EXPR ew_u.parts.lsw VAL [\old(x)=4294967309, ew_u={3:0}, ew_u.parts.lsw=4294967294, hx=0, x=4294967309] [L38] (lx) = ew_u.parts.lsw VAL [\old(x)=4294967309, ew_u={3:0}, ew_u.parts.lsw=4294967294, hx=0, lx=-2, x=4294967309] [L40] hx &= 0x7fffffff VAL [\old(x)=4294967309, lx=-2, x=4294967309] [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 VAL [\old(x)=4294967309, hx=11, lx=-2, x=4294967309] [L42] hx = 0x7ff00000 - hx VAL [\old(x)=4294967309, hx=2146435061, lx=-2, x=4294967309] [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=4294967309, \result=0, hx=2146435061, lx=-2, x=4294967309] [L74] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=4294967309, x=4294967309] [L74] COND TRUE !isinf_double(res) VAL [isinf_double(res)=0, res=4294967309, x=4294967309] [L75] reach_error() VAL [res=4294967309, x=4294967309] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 13 SDslu, 41 SDs, 0 SdLazy, 79 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred 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, 0.1s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 3367 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...