/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:09:39,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:09:39,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:09:39,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:09:39,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:09:39,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:09:39,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:09:39,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:09:39,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:09:39,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:09:39,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:09:39,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:09:39,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:09:39,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:09:39,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:09:39,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:09:39,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:09:39,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:09:39,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:09:39,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:09:39,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:09:39,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:09:39,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:09:39,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:09:39,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:09:39,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:09:39,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:09:39,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:09:39,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:09:39,218 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:09:39,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:09:39,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:09:39,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:09:39,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:09:39,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:09:39,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:09:39,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:09:39,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:09:39,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:09:39,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:09:39,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:09:39,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:09:39,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:09:39,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:09:39,227 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:09:39,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:09:39,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:09:39,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:09:39,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:09:39,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:09:39,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:09:39,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:09:39,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:09:39,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:09:39,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:09:39,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:09:39,653 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:09:39,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2021-02-21 20:09:39,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0b6c7d5/3b33458abe094700959dad6e112d54a2/FLAG79d453bab [2021-02-21 20:09:40,435 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:09:40,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2021-02-21 20:09:40,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0b6c7d5/3b33458abe094700959dad6e112d54a2/FLAG79d453bab [2021-02-21 20:09:40,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0b6c7d5/3b33458abe094700959dad6e112d54a2 [2021-02-21 20:09:40,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:09:40,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:09:40,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:40,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:09:40,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:09:40,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:40,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36fc9e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:40, skipping insertion in model container [2021-02-21 20:09:40,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:40" (1/1) ... [2021-02-21 20:09:40,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:09:40,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:09:41,125 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_0730a.c[3437,3450] [2021-02-21 20:09:41,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:41,153 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:09:41,201 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_0730a.c[3437,3450] [2021-02-21 20:09:41,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:41,223 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:09:41,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:41 WrapperNode [2021-02-21 20:09:41,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:41,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:09:41,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:09:41,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:09:41,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:41" (1/1) ... [2021-02-21 20:09:41,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:41" (1/1) ... [2021-02-21 20:09:41,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:41" (1/1) ... [2021-02-21 20:09:41,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:41" (1/1) ... [2021-02-21 20:09:41,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:41" (1/1) ... [2021-02-21 20:09:41,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:41" (1/1) ... [2021-02-21 20:09:41,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:41" (1/1) ... [2021-02-21 20:09:41,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:09:41,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:09:41,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:09:41,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:09:41,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:41" (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 [2021-02-21 20:09:41,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:09:41,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:09:41,429 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:09:41,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 20:09:41,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2021-02-21 20:09:41,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-21 20:09:41,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:09:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:09:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:09:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:09:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:09:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 20:09:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 20:09:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2021-02-21 20:09:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:09:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:09:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:09:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:09:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:09:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-21 20:09:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:09:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:09:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:09:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:09:42,314 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:09:42,315 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-21 20:09:42,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:42 BoogieIcfgContainer [2021-02-21 20:09:42,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:09:42,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:09:42,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:09:42,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:09:42,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:09:40" (1/3) ... [2021-02-21 20:09:42,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3e5185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:42, skipping insertion in model container [2021-02-21 20:09:42,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:41" (2/3) ... [2021-02-21 20:09:42,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3e5185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:42, skipping insertion in model container [2021-02-21 20:09:42,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:42" (3/3) ... [2021-02-21 20:09:42,333 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2021-02-21 20:09:42,342 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:09:42,349 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:09:42,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:09:42,411 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:09:42,411 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:09:42,411 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:09:42,412 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:09:42,412 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:09:42,412 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:09:42,412 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:09:42,412 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:09:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2021-02-21 20:09:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-21 20:09:42,461 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:42,463 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] [2021-02-21 20:09:42,463 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:42,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:42,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1224318980, now seen corresponding path program 1 times [2021-02-21 20:09:42,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:42,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905064074] [2021-02-21 20:09:42,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:42,575 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:42,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:09:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:42,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:09:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:42,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-21 20:09:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:42,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:42,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:09:42,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905064074] [2021-02-21 20:09:42,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:09:42,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:09:42,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731886894] [2021-02-21 20:09:42,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:09:42,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:09:42,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:09:42,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:09:42,957 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2021-02-21 20:09:43,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:09:43,761 INFO L93 Difference]: Finished difference Result 299 states and 360 transitions. [2021-02-21 20:09:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:09:43,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2021-02-21 20:09:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:09:43,779 INFO L225 Difference]: With dead ends: 299 [2021-02-21 20:09:43,780 INFO L226 Difference]: Without dead ends: 158 [2021-02-21 20:09:43,787 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 [2021-02-21 20:09:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-02-21 20:09:43,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-02-21 20:09:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-02-21 20:09:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 177 transitions. [2021-02-21 20:09:43,853 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 177 transitions. Word has length 52 [2021-02-21 20:09:43,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:09:43,854 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 177 transitions. [2021-02-21 20:09:43,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:09:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 177 transitions. [2021-02-21 20:09:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-21 20:09:43,858 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:43,858 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] [2021-02-21 20:09:43,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:09:43,859 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:43,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:43,859 INFO L82 PathProgramCache]: Analyzing trace with hash -573843228, now seen corresponding path program 1 times [2021-02-21 20:09:43,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:43,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769436332] [2021-02-21 20:09:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:43,863 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:44,028 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:44,124 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:44,178 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:09:44,179 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:09:44,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:09:44,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:09:44 BoogieIcfgContainer [2021-02-21 20:09:44,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:09:44,202 INFO L168 Benchmark]: Toolchain (without parser) took 3411.12 ms. Allocated memory is still 172.0 MB. Free memory was 148.4 MB in the beginning and 100.8 MB in the end (delta: 47.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:44,203 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 172.0 MB. Free memory is still 147.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:09:44,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.39 ms. Allocated memory is still 172.0 MB. Free memory was 147.4 MB in the beginning and 134.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:44,205 INFO L168 Benchmark]: Boogie Preprocessor took 77.34 ms. Allocated memory is still 172.0 MB. Free memory was 134.8 MB in the beginning and 132.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:44,206 INFO L168 Benchmark]: RCFGBuilder took 1011.18 ms. Allocated memory is still 172.0 MB. Free memory was 132.8 MB in the beginning and 130.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:44,206 INFO L168 Benchmark]: TraceAbstraction took 1878.05 ms. Allocated memory is still 172.0 MB. Free memory was 129.9 MB in the beginning and 100.8 MB in the end (delta: 29.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:44,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 172.0 MB. Free memory is still 147.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 419.39 ms. Allocated memory is still 172.0 MB. Free memory was 147.4 MB in the beginning and 134.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.34 ms. Allocated memory is still 172.0 MB. Free memory was 134.8 MB in the beginning and 132.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1011.18 ms. Allocated memory is still 172.0 MB. Free memory was 132.8 MB in the beginning and 130.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1878.05 ms. Allocated memory is still 172.0 MB. Free memory was 129.9 MB in the beginning and 100.8 MB in the end (delta: 29.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 162]: 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 146, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 143. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L157] double x = 1.0 / 0.0; [L158] CALL, EXPR __ieee754_sqrt(x) [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; [L158] RET, EXPR __ieee754_sqrt(x) [L158] double res = __ieee754_sqrt(x); [L161] CALL, EXPR isinf_double(res) [L136] __int32_t hx, lx; [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L161] RET, EXPR isinf_double(res) [L161] COND TRUE !isinf_double(res) [L162] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 172 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 37 SDslu, 140 SDs, 0 SdLazy, 184 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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=165occurred 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: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...