/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/float_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:35:47,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:35:47,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:35:47,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:35:47,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:35:47,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:35:47,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:35:47,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:35:47,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:35:47,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:35:47,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:35:47,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:35:47,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:35:47,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:35:47,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:35:47,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:35:47,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:35:47,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 22:35:47,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 22:35:47,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 22:35:47,585 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 22:35:47,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:35:47,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:35:47,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:35:47,615 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:35:47,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:35:47,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:35:47,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:35:47,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:35:47,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:35:47,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:35:47,617 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:35:47,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:35:47,617 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:35:47,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:35:47,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:35:47,618 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:35:47,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:35:47,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:35:47,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:35:47,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:35:47,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:35:47,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:35:47,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:35:48,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:35:48,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:35:48,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:35:48,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:35:48,067 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:35:48,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2021-02-23 22:35:48,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b4b98b6/24ba10d43a4c4fe1ae7383f0e033e369/FLAGda2d1c428 [2021-02-23 22:35:48,851 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:35:48,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2021-02-23 22:35:48,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b4b98b6/24ba10d43a4c4fe1ae7383f0e033e369/FLAGda2d1c428 [2021-02-23 22:35:49,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b4b98b6/24ba10d43a4c4fe1ae7383f0e033e369 [2021-02-23 22:35:49,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:35:49,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:35:49,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:35:49,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:35:49,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:35:49,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:35:49" (1/1) ... [2021-02-23 22:35:49,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b47460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49, skipping insertion in model container [2021-02-23 22:35:49,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:35:49" (1/1) ... [2021-02-23 22:35:49,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:35:49,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:35:49,468 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/float_req_bl_1051.c[1637,1650] [2021-02-23 22:35:49,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:35:49,481 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:35:49,507 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/float_req_bl_1051.c[1637,1650] [2021-02-23 22:35:49,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:35:49,532 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:35:49,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49 WrapperNode [2021-02-23 22:35:49,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:35:49,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:35:49,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:35:49,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:35:49,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49" (1/1) ... [2021-02-23 22:35:49,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49" (1/1) ... [2021-02-23 22:35:49,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49" (1/1) ... [2021-02-23 22:35:49,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49" (1/1) ... [2021-02-23 22:35:49,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49" (1/1) ... [2021-02-23 22:35:49,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49" (1/1) ... [2021-02-23 22:35:49,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49" (1/1) ... [2021-02-23 22:35:49,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:35:49,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:35:49,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:35:49,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:35:49,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49" (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 22:35:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:35:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:35:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:35:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2021-02-23 22:35:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-23 22:35:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:35:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:35:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:35:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:35:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:35:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 22:35:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2021-02-23 22:35:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:35:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:35:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:35:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:35:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:35:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-23 22:35:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:35:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:35:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:35:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:35:50,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:35:50,117 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 22:35:50,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:35:50 BoogieIcfgContainer [2021-02-23 22:35:50,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:35:50,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:35:50,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:35:50,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:35:50,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:35:49" (1/3) ... [2021-02-23 22:35:50,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7911898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:35:50, skipping insertion in model container [2021-02-23 22:35:50,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:49" (2/3) ... [2021-02-23 22:35:50,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7911898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:35:50, skipping insertion in model container [2021-02-23 22:35:50,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:35:50" (3/3) ... [2021-02-23 22:35:50,128 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2021-02-23 22:35:50,135 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:35:50,143 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:35:50,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:35:50,211 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:35:50,211 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:35:50,211 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:35:50,211 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:35:50,211 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:35:50,212 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:35:50,212 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:35:50,212 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:35:50,244 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-23 22:35:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 22:35:50,260 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:35:50,262 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] [2021-02-23 22:35:50,263 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:35:50,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:35:50,273 INFO L82 PathProgramCache]: Analyzing trace with hash 998985688, now seen corresponding path program 1 times [2021-02-23 22:35:50,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:35:50,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043899503] [2021-02-23 22:35:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:35:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:35:50,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:50,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:50,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:50,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:50,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:35:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:35:50,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:50,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:50,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:35:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:35:50,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:50,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:50,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:50,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:50,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 22:35:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:35:50,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:50,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:50,750 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 22:35:50,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043899503] [2021-02-23 22:35:50,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:35:50,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:35:50,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177208802] [2021-02-23 22:35:50,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:35:50,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:35:50,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:35:50,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:35:50,776 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 4 states. [2021-02-23 22:35:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:35:51,039 INFO L93 Difference]: Finished difference Result 133 states and 159 transitions. [2021-02-23 22:35:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:35:51,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2021-02-23 22:35:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:35:51,079 INFO L225 Difference]: With dead ends: 133 [2021-02-23 22:35:51,080 INFO L226 Difference]: Without dead ends: 70 [2021-02-23 22:35:51,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 22:35:51,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-23 22:35:51,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-02-23 22:35:51,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-02-23 22:35:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-02-23 22:35:51,142 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 39 [2021-02-23 22:35:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:35:51,142 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-02-23 22:35:51,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:35:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-02-23 22:35:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 22:35:51,145 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:35:51,145 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] [2021-02-23 22:35:51,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:35:51,146 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:35:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:35:51,147 INFO L82 PathProgramCache]: Analyzing trace with hash -240593112, now seen corresponding path program 1 times [2021-02-23 22:35:51,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:35:51,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900416063] [2021-02-23 22:35:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:35:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:35:51,284 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:35:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:35:51,350 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:35:51,392 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:35:51,393 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:35:51,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:35:51,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:35:51 BoogieIcfgContainer [2021-02-23 22:35:51,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:35:51,445 INFO L168 Benchmark]: Toolchain (without parser) took 2191.84 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 119.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2021-02-23 22:35:51,446 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 124.2 MB in the end (delta: 78.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:35:51,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.74 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:35:51,448 INFO L168 Benchmark]: Boogie Preprocessor took 46.87 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:35:51,449 INFO L168 Benchmark]: RCFGBuilder took 537.41 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 124.2 MB in the end (delta: -9.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 22:35:51,450 INFO L168 Benchmark]: TraceAbstraction took 1322.49 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 119.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-23 22:35:51,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 124.2 MB in the end (delta: 78.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 264.74 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.87 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 537.41 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 124.2 MB in the end (delta: -9.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1322.49 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 119.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 73]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 60, overapproximation of someBinaryArithmeticFLOAToperation at line 47, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000] [L68] float x = 0.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L69] CALL, EXPR floor_float(x) VAL [\old(x)=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000] [L17] __int32_t i0, j0; VAL [\old(x)=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000008] [L18] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000008] [L20] ieee_float_shape_type gf_u; VAL [\old(x)=1000000000000000000000000000008, gf_u={3:0}, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000008] [L21] gf_u.value = (x) VAL [\old(x)=1000000000000000000000000000008, gf_u={3:0}, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000008] [L22] EXPR gf_u.word VAL [\old(x)=1000000000000000000000000000008, gf_u={3:0}, gf_u.word=0, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000008] [L22] (i0) = gf_u.word VAL [\old(x)=1000000000000000000000000000008, gf_u={3:0}, gf_u.word=0, huge_floor=1000000000000000000000000000000, i0=0, x=1000000000000000000000000000008] [L24] ix = (i0 & 0x7fffffff) VAL [\old(x)=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000, i0=0, x=1000000000000000000000000000008] [L25] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000008] [L26] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000008] [L46] COND TRUE !((ix) < 0x7f800000L) VAL [\old(x)=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000008] [L47] return x + x; VAL [\old(x)=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000008] [L69] RET, EXPR floor_float(x) VAL [floor_float(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000008] [L69] float res = floor_float(x); VAL [floor_float(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000004, x=1000000000000000000000000000008] [L72] CALL, EXPR isnan_float(res) VAL [\old(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000] [L60] return x != x; VAL [\old(x)=1000000000000000000000000000004, \result=0, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000004] [L72] RET, EXPR isnan_float(res) VAL [huge_floor=1000000000000000000000000000000, isnan_float(res)=0, res=1000000000000000000000000000004, x=1000000000000000000000000000008] [L72] COND TRUE !isnan_float(res) VAL [huge_floor=1000000000000000000000000000000, isnan_float(res)=0, res=1000000000000000000000000000004, x=1000000000000000000000000000008] [L73] reach_error() VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000004, x=1000000000000000000000000000008] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 19 SDslu, 56 SDs, 0 SdLazy, 87 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 3154 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...