/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 0.1.25-72570d3 [2020-08-22 16:16:22,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:16:22,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:16:22,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:16:22,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:16:22,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:16:22,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:16:22,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:16:22,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:16:22,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:16:22,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:16:22,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:16:22,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:16:22,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:16:22,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:16:22,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:16:22,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:16:22,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:16:22,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:16:22,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:16:22,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:16:22,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:16:22,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:16:22,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:16:22,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:16:22,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:16:22,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:16:22,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:16:22,505 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 [2020-08-22 16:16:22,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:16:22,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:16:22,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:16:22,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:16:22,541 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:16:22,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:16:22,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:16:22,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:16:22,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:16:22,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:16:22,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:16:22,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:16:22,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:16:22,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:16:22,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:16:22,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:16:22,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:16:22,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:16:22,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:16:22,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:16:22,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:16:22,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:16:22,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:16:22,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:16:22,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:16:22,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:16:22,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:16:22,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:16:22,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:16:22,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:16:22,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:16:22,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:16:22,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:16:22,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:16:22,864 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:16:22,864 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-08-22 16:16:22,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f9c40c7/d66f150b0b1245f19df88855ff42da7f/FLAG4746fbd48 [2020-08-22 16:16:23,353 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:16:23,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-08-22 16:16:23,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f9c40c7/d66f150b0b1245f19df88855ff42da7f/FLAG4746fbd48 [2020-08-22 16:16:23,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f9c40c7/d66f150b0b1245f19df88855ff42da7f [2020-08-22 16:16:23,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:16:23,750 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:16:23,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:16:23,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:16:23,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:16:23,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:16:23" (1/1) ... [2020-08-22 16:16:23,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216d60fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:23, skipping insertion in model container [2020-08-22 16:16:23,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:16:23" (1/1) ... [2020-08-22 16:16:23,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:16:23,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:16:23,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:16:23,971 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:16:23,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:16:24,016 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:16:24,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:24 WrapperNode [2020-08-22 16:16:24,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:16:24,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:16:24,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:16:24,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:16:24,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:24" (1/1) ... [2020-08-22 16:16:24,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:24" (1/1) ... [2020-08-22 16:16:24,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:24" (1/1) ... [2020-08-22 16:16:24,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:24" (1/1) ... [2020-08-22 16:16:24,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:24" (1/1) ... [2020-08-22 16:16:24,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:24" (1/1) ... [2020-08-22 16:16:24,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:24" (1/1) ... [2020-08-22 16:16:24,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:16:24,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:16:24,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:16:24,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:16:24,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:24" (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 [2020-08-22 16:16:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:16:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:16:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:16:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:16:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-08-22 16:16:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:16:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:16:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:16:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:16:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:16:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:16:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-08-22 16:16:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:16:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:16:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:16:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:16:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:16:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:16:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:16:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:16:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:16:24,424 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:16:24,425 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:16:24,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:16:24 BoogieIcfgContainer [2020-08-22 16:16:24,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:16:24,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:16:24,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:16:24,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:16:24,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:16:23" (1/3) ... [2020-08-22 16:16:24,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d17f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:16:24, skipping insertion in model container [2020-08-22 16:16:24,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:16:24" (2/3) ... [2020-08-22 16:16:24,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d17f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:16:24, skipping insertion in model container [2020-08-22 16:16:24,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:16:24" (3/3) ... [2020-08-22 16:16:24,436 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-08-22 16:16:24,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:16:24,454 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:16:24,468 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:16:24,494 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:16:24,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:16:24,495 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:16:24,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:16:24,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:16:24,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:16:24,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:16:24,496 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:16:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-22 16:16:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 16:16:24,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:16:24,533 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] [2020-08-22 16:16:24,534 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:16:24,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:16:24,542 INFO L82 PathProgramCache]: Analyzing trace with hash -78739841, now seen corresponding path program 1 times [2020-08-22 16:16:24,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:16:24,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650824873] [2020-08-22 16:16:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:16:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:16:24,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:16:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:16:24,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:16:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:16:24,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 16:16:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:16:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:16:24,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650824873] [2020-08-22 16:16:24,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:16:24,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:16:24,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178252127] [2020-08-22 16:16:24,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:16:24,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:16:24,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:16:24,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:16:24,849 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-08-22 16:16:24,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:16:24,969 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-08-22 16:16:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:16:24,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-08-22 16:16:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:16:24,979 INFO L225 Difference]: With dead ends: 47 [2020-08-22 16:16:24,980 INFO L226 Difference]: Without dead ends: 21 [2020-08-22 16:16:24,984 INFO L675 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 [2020-08-22 16:16:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-22 16:16:25,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-22 16:16:25,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-22 16:16:25,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-08-22 16:16:25,018 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 20 [2020-08-22 16:16:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:16:25,018 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-08-22 16:16:25,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:16:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-08-22 16:16:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 16:16:25,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:16:25,020 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] [2020-08-22 16:16:25,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:16:25,020 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:16:25,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:16:25,021 INFO L82 PathProgramCache]: Analyzing trace with hash 179425597, now seen corresponding path program 1 times [2020-08-22 16:16:25,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:16:25,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987349865] [2020-08-22 16:16:25,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:16:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:16:25,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:16:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:16:25,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:16:25,144 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:16:25,144 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:16:25,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:16:25,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:16:25 BoogieIcfgContainer [2020-08-22 16:16:25,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:16:25,177 INFO L168 Benchmark]: Toolchain (without parser) took 1426.92 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 104.2 MB in the beginning and 124.5 MB in the end (delta: -20.3 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:16:25,178 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:16:25,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.81 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 93.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:16:25,180 INFO L168 Benchmark]: Boogie Preprocessor took 116.66 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 181.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:16:25,181 INFO L168 Benchmark]: RCFGBuilder took 293.86 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 165.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:16:25,182 INFO L168 Benchmark]: TraceAbstraction took 744.74 ms. Allocated memory is still 203.9 MB. Free memory was 165.1 MB in the beginning and 124.5 MB in the end (delta: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:16:25,186 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.81 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 93.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.66 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 181.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 293.86 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 165.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 744.74 ms. Allocated memory is still 203.9 MB. Free memory was 165.1 MB in the beginning and 124.5 MB in the end (delta: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 37, overapproximation of someBinaryArithmeticDOUBLEoperation at line 25, overapproximation of bitwiseXor at line 24. Possible FailurePath: [L30] int a; [L31] double r; [L33] a = __VERIFIER_nondet_int() [L34] CALL assume_abort_if_not(a >= -10000 && a <= 10000) VAL [\old(cond)=1] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L34] RET assume_abort_if_not(a >= -10000 && a <= 10000) VAL [a=10000] [L36] CALL, EXPR cast(a) VAL [\old(i)=10000] [L20] union u x, y; [L21] x.i[0] = 0x43300000 [L22] EXPR x.i[0] [L22] y.i[0] = x.i[0] [L23] x.i[1] = 0x80000000 [L24] EXPR x.i[1] [L24] y.i[1] = i ^ x.i[1] [L25] EXPR y.d [L25] EXPR x.d [L25] return y.d - x.d; [L25] return y.d - x.d; [L25] return y.d - x.d; VAL [\old(i)=10000, i=10000] [L36] RET, EXPR cast(a) VAL [a=10000, cast(a)=1127219206] [L36] r = cast(a) [L37] CALL __VERIFIER_assert(r >= -10000. && r <= 10000.) VAL [\old(cond)=0] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 22 SDslu, 5 SDs, 0 SdLazy, 17 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=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, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 760 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...