/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:46:05,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:46:05,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:46:05,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:46:05,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:46:05,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:46:05,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:46:05,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:46:05,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:46:05,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:46:05,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:46:05,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:46:05,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:46:05,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:46:05,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:46:05,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:46:05,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:46:05,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:46:05,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:46:05,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:46:05,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:46:05,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:46:05,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:46:05,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:46:05,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:46:05,431 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:46:05,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:46:05,432 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:46:05,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:46:05,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:46:05,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:46:05,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:46:05,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:46:05,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:46:05,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:46:05,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:46:05,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:46:05,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:46:05,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:46:05,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:46:05,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:46:05,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:46:05,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:46:05,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:46:05,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:46:05,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:46:05,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:46:05,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:46:05,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:46:05,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:46:05,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:46:05,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:46:05,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:46:05,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:46:05,850 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:46:05,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c [2021-02-21 15:46:05,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefde9cee/0e7a9226f991428ab872a550c7b81a01/FLAG4583e1c00 [2021-02-21 15:46:06,558 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:46:06,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cast_union_loose.c [2021-02-21 15:46:06,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefde9cee/0e7a9226f991428ab872a550c7b81a01/FLAG4583e1c00 [2021-02-21 15:46:06,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefde9cee/0e7a9226f991428ab872a550c7b81a01 [2021-02-21 15:46:06,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:46:06,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:46:06,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:46:06,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:46:06,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:46:06,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:46:06" (1/1) ... [2021-02-21 15:46:06,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fcd9efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:06, skipping insertion in model container [2021-02-21 15:46:06,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:46:06" (1/1) ... [2021-02-21 15:46:06,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:46:06,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:46:07,154 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-benchs/cast_union_loose.c[582,595] [2021-02-21 15:46:07,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:46:07,200 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:46:07,223 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-benchs/cast_union_loose.c[582,595] [2021-02-21 15:46:07,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:46:07,286 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:46:07,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:07 WrapperNode [2021-02-21 15:46:07,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:46:07,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:46:07,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:46:07,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:46:07,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:07" (1/1) ... [2021-02-21 15:46:07,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:07" (1/1) ... [2021-02-21 15:46:07,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:07" (1/1) ... [2021-02-21 15:46:07,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:07" (1/1) ... [2021-02-21 15:46:07,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:07" (1/1) ... [2021-02-21 15:46:07,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:07" (1/1) ... [2021-02-21 15:46:07,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:07" (1/1) ... [2021-02-21 15:46:07,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:46:07,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:46:07,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:46:07,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:46:07,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:07" (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 15:46:07,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:46:07,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:46:07,543 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:46:07,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 15:46:07,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 15:46:07,544 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2021-02-21 15:46:07,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:46:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:46:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:46:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:46:07,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:46:07,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 15:46:07,547 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 15:46:07,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 15:46:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2021-02-21 15:46:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:46:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:46:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:46:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:46:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:46:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:46:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:46:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:46:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:46:08,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:46:08,095 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 15:46:08,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:46:08 BoogieIcfgContainer [2021-02-21 15:46:08,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:46:08,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:46:08,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:46:08,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:46:08,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:46:06" (1/3) ... [2021-02-21 15:46:08,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d0f23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:46:08, skipping insertion in model container [2021-02-21 15:46:08,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:07" (2/3) ... [2021-02-21 15:46:08,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d0f23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:46:08, skipping insertion in model container [2021-02-21 15:46:08,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:46:08" (3/3) ... [2021-02-21 15:46:08,124 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2021-02-21 15:46:08,133 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:46:08,139 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:46:08,161 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:46:08,191 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:46:08,191 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:46:08,191 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:46:08,191 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:46:08,192 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:46:08,192 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:46:08,192 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:46:08,192 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:46:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-02-21 15:46:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 15:46:08,218 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:46:08,219 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] [2021-02-21 15:46:08,220 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:46:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:46:08,227 INFO L82 PathProgramCache]: Analyzing trace with hash 794343679, now seen corresponding path program 1 times [2021-02-21 15:46:08,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:46:08,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740818278] [2021-02-21 15:46:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:46:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:46:08,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:08,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:08,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:08,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:08,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:46:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:46:08,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:08,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:08,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:46:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:46:08,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:08,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:08,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:08,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:08,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 15:46:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:46:08,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:08,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:08,731 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 15:46:08,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740818278] [2021-02-21 15:46:08,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:46:08,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:46:08,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295654345] [2021-02-21 15:46:08,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:46:08,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:46:08,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:46:08,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:46:08,765 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2021-02-21 15:46:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:46:08,963 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2021-02-21 15:46:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:46:08,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-02-21 15:46:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:46:08,974 INFO L225 Difference]: With dead ends: 47 [2021-02-21 15:46:08,974 INFO L226 Difference]: Without dead ends: 21 [2021-02-21 15:46:08,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:46:08,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-02-21 15:46:09,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-02-21 15:46:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-02-21 15:46:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-02-21 15:46:09,024 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 20 [2021-02-21 15:46:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:46:09,024 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-02-21 15:46:09,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:46:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-02-21 15:46:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 15:46:09,026 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:46:09,026 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] [2021-02-21 15:46:09,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:46:09,026 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:46:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:46:09,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1052509117, now seen corresponding path program 1 times [2021-02-21 15:46:09,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:46:09,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737878398] [2021-02-21 15:46:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:46:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:46:09,083 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:46:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:46:09,158 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:46:09,198 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:46:09,198 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:46:09,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:46:09,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:46:09 BoogieIcfgContainer [2021-02-21 15:46:09,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:46:09,237 INFO L168 Benchmark]: Toolchain (without parser) took 2309.78 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 87.6 MB in the end (delta: 43.3 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. [2021-02-21 15:46:09,238 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:46:09,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.45 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 119.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:46:09,240 INFO L168 Benchmark]: Boogie Preprocessor took 88.27 ms. Allocated memory is still 155.2 MB. Free memory was 119.5 MB in the beginning and 117.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:46:09,241 INFO L168 Benchmark]: RCFGBuilder took 720.09 ms. Allocated memory is still 155.2 MB. Free memory was 117.9 MB in the beginning and 135.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:46:09,242 INFO L168 Benchmark]: TraceAbstraction took 1130.26 ms. Allocated memory is still 155.2 MB. Free memory was 134.8 MB in the beginning and 87.6 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2021-02-21 15:46:09,245 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 155.2 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.45 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 119.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.27 ms. Allocated memory is still 155.2 MB. Free memory was 119.5 MB in the beginning and 117.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 720.09 ms. Allocated memory is still 155.2 MB. Free memory was 117.9 MB in the beginning and 135.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1130.26 ms. Allocated memory is still 155.2 MB. Free memory was 134.8 MB in the beginning and 87.6 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 27, overapproximation of bitwiseXor at line 26. Possible FailurePath: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L36] CALL assume_abort_if_not(a >= -10000 && a <= 10000) VAL [\old(cond)=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L36] RET assume_abort_if_not(a >= -10000 && a <= 10000) VAL [a=10000] [L38] CALL, EXPR cast(a) VAL [\old(i)=10000] [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; VAL [\old(i)=10000, i=10000] [L38] RET, EXPR cast(a) VAL [a=10000, cast(a)=1127219207] [L38] r = cast(a) [L39] CALL __VERIFIER_assert(r >= -10000. && r <= 10000.) VAL [\old(cond)=0] [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 18 SDslu, 11 SDs, 0 SdLazy, 16 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1159 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...