/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 0.2.0-7d8eed3 [2020-11-06 21:56:24,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:56:24,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:56:24,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:56:24,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:56:24,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:56:24,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:56:24,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:56:24,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:56:24,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:56:24,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:56:24,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:56:24,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:56:24,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:56:24,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:56:24,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:56:24,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:56:24,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:56:24,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:56:24,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:56:24,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:56:24,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:56:24,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:56:24,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:56:24,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:56:24,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:56:24,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:56:24,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:56:24,819 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 [2020-11-06 21:56:24,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:56:24,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:56:24,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:56:24,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:56:24,852 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:56:24,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:56:24,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:56:24,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:56:24,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:56:24,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:56:24,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:56:24,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:56:24,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:56:24,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:56:24,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:56:24,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:56:24,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:56:24,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:56:24,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:56:24,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:56:24,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:56:24,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:56:24,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:56:24,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:56:24,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:56:24,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:56:24,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:56:24,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:56:24,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:56:24,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:56:25,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:56:25,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:56:25,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:56:25,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:56:25,293 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:56:25,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-11-06 21:56:25,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89974fbff/36406c0a160d464abeee1f5b06d286b0/FLAG291d9a2e7 [2020-11-06 21:56:25,992 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:56:25,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-11-06 21:56:26,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89974fbff/36406c0a160d464abeee1f5b06d286b0/FLAG291d9a2e7 [2020-11-06 21:56:26,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89974fbff/36406c0a160d464abeee1f5b06d286b0 [2020-11-06 21:56:26,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:56:26,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:56:26,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:56:26,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:56:26,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:56:26,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:26" (1/1) ... [2020-11-06 21:56:26,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5910915d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26, skipping insertion in model container [2020-11-06 21:56:26,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:26" (1/1) ... [2020-11-06 21:56:26,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:56:26,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:56:26,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:56:26,580 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:56:26,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:56:26,622 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:56:26,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26 WrapperNode [2020-11-06 21:56:26,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:56:26,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:56:26,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:56:26,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:56:26,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26" (1/1) ... [2020-11-06 21:56:26,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26" (1/1) ... [2020-11-06 21:56:26,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26" (1/1) ... [2020-11-06 21:56:26,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26" (1/1) ... [2020-11-06 21:56:26,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26" (1/1) ... [2020-11-06 21:56:26,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26" (1/1) ... [2020-11-06 21:56:26,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26" (1/1) ... [2020-11-06 21:56:26,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:56:26,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:56:26,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:56:26,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:56:26,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26" (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 [2020-11-06 21:56:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:56:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:56:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:56:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 21:56:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 21:56:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-11-06 21:56:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:56:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:56:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:56:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:56:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:56:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 21:56:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 21:56:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 21:56:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-11-06 21:56:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:56:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:56:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:56:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:56:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:56:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:56:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:56:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:56:26,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:56:27,188 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:56:27,189 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 21:56:27,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:27 BoogieIcfgContainer [2020-11-06 21:56:27,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:56:27,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:56:27,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:56:27,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:56:27,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:56:26" (1/3) ... [2020-11-06 21:56:27,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcb8dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:27, skipping insertion in model container [2020-11-06 21:56:27,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:26" (2/3) ... [2020-11-06 21:56:27,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcb8dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:27, skipping insertion in model container [2020-11-06 21:56:27,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:27" (3/3) ... [2020-11-06 21:56:27,201 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-11-06 21:56:27,268 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:56:27,273 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:56:27,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:56:27,339 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:56:27,339 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:56:27,339 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:56:27,339 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:56:27,340 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:56:27,340 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:56:27,340 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:56:27,340 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:56:27,369 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-06 21:56:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 21:56:27,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:56:27,377 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] [2020-11-06 21:56:27,377 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:56:27,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:56:27,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1650227089, now seen corresponding path program 1 times [2020-11-06 21:56:27,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:56:27,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952929990] [2020-11-06 21:56:27,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:56:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:56:27,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:56:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:56:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:56:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:56:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-06 21:56:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:56:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:56:27,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952929990] [2020-11-06 21:56:27,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:56:27,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:56:27,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242688241] [2020-11-06 21:56:27,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:56:27,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:56:27,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:56:27,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:56:27,810 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-11-06 21:56:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:56:27,953 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-11-06 21:56:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:56:27,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-06 21:56:27,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:56:27,964 INFO L225 Difference]: With dead ends: 52 [2020-11-06 21:56:27,964 INFO L226 Difference]: Without dead ends: 22 [2020-11-06 21:56:27,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:56:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-06 21:56:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-06 21:56:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-06 21:56:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-11-06 21:56:28,015 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 21 [2020-11-06 21:56:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:56:28,015 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-11-06 21:56:28,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:56:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-11-06 21:56:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 21:56:28,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:56:28,017 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] [2020-11-06 21:56:28,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:56:28,018 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:56:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:56:28,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1063421075, now seen corresponding path program 1 times [2020-11-06 21:56:28,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:56:28,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090889396] [2020-11-06 21:56:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:56:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:56:28,074 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:56:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:56:28,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:56:28,150 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:56:28,151 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:56:28,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:56:28,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:56:28 BoogieIcfgContainer [2020-11-06 21:56:28,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:56:28,189 INFO L168 Benchmark]: Toolchain (without parser) took 1839.11 ms. Allocated memory is still 155.2 MB. Free memory was 129.7 MB in the beginning and 91.7 MB in the end (delta: 38.0 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. [2020-11-06 21:56:28,190 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:56:28,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.91 ms. Allocated memory is still 155.2 MB. Free memory was 129.2 MB in the beginning and 119.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 21:56:28,192 INFO L168 Benchmark]: Boogie Preprocessor took 40.15 ms. Allocated memory is still 155.2 MB. Free memory was 119.2 MB in the beginning and 117.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:56:28,193 INFO L168 Benchmark]: RCFGBuilder took 526.19 ms. Allocated memory is still 155.2 MB. Free memory was 117.5 MB in the beginning and 101.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-06 21:56:28,194 INFO L168 Benchmark]: TraceAbstraction took 993.39 ms. Allocated memory is still 155.2 MB. Free memory was 101.5 MB in the beginning and 91.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 21:56:28,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.91 ms. Allocated memory is still 155.2 MB. Free memory was 129.2 MB in the beginning and 119.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.15 ms. Allocated memory is still 155.2 MB. Free memory was 119.2 MB in the beginning and 117.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 526.19 ms. Allocated memory is still 155.2 MB. Free memory was 117.5 MB in the beginning and 101.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 993.39 ms. Allocated memory is still 155.2 MB. Free memory was 101.5 MB in the beginning and 91.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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=0] [L38] CALL, EXPR cast(a) VAL [\old(i)=0] [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)=0, i=0] [L38] RET, EXPR cast(a) VAL [a=0, 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] CALL reach_error() [L3] __assert_fail("0", "cast_union_loose.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 18 SDslu, 11 SDs, 0 SdLazy, 16 SolverSat, 13 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1240 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...