/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-36cd7be [2021-02-23 13:11:23,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:11:23,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:11:23,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:11:23,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:11:23,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:11:23,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:11:23,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:11:23,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:11:24,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:11:24,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:11:24,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:11:24,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:11:24,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:11:24,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:11:24,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:11:24,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:11:24,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:11:24,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:11:24,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:11:24,041 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 [2021-02-23 13:11:24,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:11:24,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:11:24,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:11:24,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:11:24,071 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:11:24,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:11:24,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:11:24,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:11:24,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:11:24,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:11:24,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:11:24,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:11:24,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:11:24,074 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:11:24,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:11:24,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:11:24,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:11:24,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:11:24,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:11:24,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:11:24,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:11:24,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:11:24,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:11:24,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:11:24,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:11:24,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:11:24,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:11:24,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:11:24,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:11:24,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:11:24,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:11:24,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:11:24,455 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:11:24,456 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:11:24,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c [2021-02-23 13:11:24,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6af5ace2e/2a200e3863634a66beea57151b886eaf/FLAGd9e8e6ab5 [2021-02-23 13:11:25,178 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:11:25,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cast_union_loose.c [2021-02-23 13:11:25,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6af5ace2e/2a200e3863634a66beea57151b886eaf/FLAGd9e8e6ab5 [2021-02-23 13:11:25,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6af5ace2e/2a200e3863634a66beea57151b886eaf [2021-02-23 13:11:25,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:11:25,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:11:25,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:11:25,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:11:25,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:11:25,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:11:25" (1/1) ... [2021-02-23 13:11:25,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68062f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25, skipping insertion in model container [2021-02-23 13:11:25,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:11:25" (1/1) ... [2021-02-23 13:11:25,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:11:25,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:11:25,799 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] [2021-02-23 13:11:25,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:11:25,832 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:11:25,846 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] [2021-02-23 13:11:25,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:11:25,875 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:11:25,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25 WrapperNode [2021-02-23 13:11:25,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:11:25,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:11:25,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:11:25,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:11:25,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25" (1/1) ... [2021-02-23 13:11:25,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25" (1/1) ... [2021-02-23 13:11:25,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25" (1/1) ... [2021-02-23 13:11:25,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25" (1/1) ... [2021-02-23 13:11:25,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25" (1/1) ... [2021-02-23 13:11:25,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25" (1/1) ... [2021-02-23 13:11:25,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25" (1/1) ... [2021-02-23 13:11:25,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:11:25,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:11:25,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:11:25,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:11:25,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25" (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 13:11:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:11:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:11:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:11:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:11:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:11:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2021-02-23 13:11:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:11:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:11:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:11:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:11:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:11:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:11:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:11:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:11:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2021-02-23 13:11:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:11:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:11:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:11:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:11:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:11:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:11:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:11:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:11:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:11:26,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:11:26,448 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:11:26,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:11:26 BoogieIcfgContainer [2021-02-23 13:11:26,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:11:26,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:11:26,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:11:26,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:11:26,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:11:25" (1/3) ... [2021-02-23 13:11:26,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224bc222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:11:26, skipping insertion in model container [2021-02-23 13:11:26,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:11:25" (2/3) ... [2021-02-23 13:11:26,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224bc222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:11:26, skipping insertion in model container [2021-02-23 13:11:26,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:11:26" (3/3) ... [2021-02-23 13:11:26,462 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2021-02-23 13:11:26,470 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:11:26,475 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:11:26,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:11:26,535 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:11:26,536 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:11:26,536 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:11:26,536 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:11:26,536 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:11:26,536 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:11:26,536 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:11:26,537 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:11:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-02-23 13:11:26,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-23 13:11:26,569 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:11:26,569 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] [2021-02-23 13:11:26,570 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:11:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:11:26,580 INFO L82 PathProgramCache]: Analyzing trace with hash 794343679, now seen corresponding path program 1 times [2021-02-23 13:11:26,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:11:26,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113652095] [2021-02-23 13:11:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:11:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:11:26,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:11:26,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:11:26,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:11:26,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:11:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:11:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:11:26,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:11:26,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:11:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:11:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:11:27,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:11:27,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:11:27,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:11:27,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:11:27,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 13:11:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:11:27,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:11:27,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:11:27,119 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 13:11:27,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113652095] [2021-02-23 13:11:27,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:11:27,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:11:27,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361410484] [2021-02-23 13:11:27,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:11:27,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:11:27,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:11:27,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:11:27,151 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2021-02-23 13:11:27,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:11:27,428 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2021-02-23 13:11:27,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:11:27,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-02-23 13:11:27,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:11:27,442 INFO L225 Difference]: With dead ends: 47 [2021-02-23 13:11:27,442 INFO L226 Difference]: Without dead ends: 21 [2021-02-23 13:11:27,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:11:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-02-23 13:11:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-02-23 13:11:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-02-23 13:11:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-02-23 13:11:27,484 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 20 [2021-02-23 13:11:27,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:11:27,485 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-02-23 13:11:27,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:11:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-02-23 13:11:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-23 13:11:27,486 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:11:27,486 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] [2021-02-23 13:11:27,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:11:27,487 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:11:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:11:27,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1052509117, now seen corresponding path program 1 times [2021-02-23 13:11:27,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:11:27,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847536261] [2021-02-23 13:11:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:11:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:11:27,576 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:11:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:11:27,623 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:11:27,658 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:11:27,659 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:11:27,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:11:27,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:11:27 BoogieIcfgContainer [2021-02-23 13:11:27,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:11:27,695 INFO L168 Benchmark]: Toolchain (without parser) took 2145.62 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 82.1 MB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:11:27,696 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:11:27,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.57 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 114.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:11:27,697 INFO L168 Benchmark]: Boogie Preprocessor took 40.30 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:11:27,698 INFO L168 Benchmark]: RCFGBuilder took 533.10 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 129.8 MB in the end (delta: -16.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:11:27,699 INFO L168 Benchmark]: TraceAbstraction took 1239.67 ms. Allocated memory is still 151.0 MB. Free memory was 129.3 MB in the beginning and 82.1 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:11:27,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 310.57 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 114.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.30 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 533.10 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 129.8 MB in the end (delta: -16.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1239.67 ms. Allocated memory is still 151.0 MB. Free memory was 129.3 MB in the beginning and 82.1 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: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.1s 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...