/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 21:50:45,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:50:45,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:50:45,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 21:50:45,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:50:45,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:50:45,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:50:45,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:50:45,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:50:45,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:50:45,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:50:45,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:50:45,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:50:45,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:50:45,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:50:45,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:50:45,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:50:45,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:50:45,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:50:45,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:50:45,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 21:50:46,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:50:46,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:50:46,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:50:46,014 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:50:46,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:50:46,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:50:46,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:50:46,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:50:46,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:50:46,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:50:46,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:50:46,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:50:46,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:50:46,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:50:46,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:50:46,018 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:50:46,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:50:46,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:50:46,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:50:46,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:50:46,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:50:46,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:50:46,019 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 21:50:46,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:50:46,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:50:46,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:50:46,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:50:46,345 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:50:46,346 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-08-22 21:50:46,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a71d6038/513b67cdcbb04a2db9b43793c83b9f68/FLAGbf5f178b0 [2020-08-22 21:50:46,881 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:50:46,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-08-22 21:50:46,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a71d6038/513b67cdcbb04a2db9b43793c83b9f68/FLAGbf5f178b0 [2020-08-22 21:50:47,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a71d6038/513b67cdcbb04a2db9b43793c83b9f68 [2020-08-22 21:50:47,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:50:47,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:50:47,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:50:47,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:50:47,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:50:47,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:50:47" (1/1) ... [2020-08-22 21:50:47,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536c8dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47, skipping insertion in model container [2020-08-22 21:50:47,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:50:47" (1/1) ... [2020-08-22 21:50:47,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:50:47,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:50:47,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:50:47,554 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:50:47,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:50:47,750 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:50:47,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47 WrapperNode [2020-08-22 21:50:47,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:50:47,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:50:47,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:50:47,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:50:47,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47" (1/1) ... [2020-08-22 21:50:47,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47" (1/1) ... [2020-08-22 21:50:47,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47" (1/1) ... [2020-08-22 21:50:47,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47" (1/1) ... [2020-08-22 21:50:47,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47" (1/1) ... [2020-08-22 21:50:47,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47" (1/1) ... [2020-08-22 21:50:47,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47" (1/1) ... [2020-08-22 21:50:47,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:50:47,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:50:47,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:50:47,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:50:47,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47" (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 21:50:47,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:50:47,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:50:47,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-08-22 21:50:47,885 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-08-22 21:50:47,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 21:50:47,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:50:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:50:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-08-22 21:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 21:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 21:50:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 21:50:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 21:50:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-08-22 21:50:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 21:50:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:50:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:50:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:50:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 21:50:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 21:50:48,231 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:50:48,232 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 21:50:48,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:50:48 BoogieIcfgContainer [2020-08-22 21:50:48,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:50:48,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:50:48,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:50:48,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:50:48,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:50:47" (1/3) ... [2020-08-22 21:50:48,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36dd9b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:50:48, skipping insertion in model container [2020-08-22 21:50:48,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:47" (2/3) ... [2020-08-22 21:50:48,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36dd9b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:50:48, skipping insertion in model container [2020-08-22 21:50:48,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:50:48" (3/3) ... [2020-08-22 21:50:48,245 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2020-08-22 21:50:48,256 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:50:48,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:50:48,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:50:48,301 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:50:48,301 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:50:48,301 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:50:48,302 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:50:48,302 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:50:48,302 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:50:48,302 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:50:48,303 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:50:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-22 21:50:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 21:50:48,332 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:48,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:50:48,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:48,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:48,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2131665852, now seen corresponding path program 1 times [2020-08-22 21:50:48,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:48,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24571316] [2020-08-22 21:50:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:48,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:50:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:48,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 21:50:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:48,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 21:50:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:48,616 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 21:50:48,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24571316] [2020-08-22 21:50:48,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:50:48,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 21:50:48,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16901583] [2020-08-22 21:50:48,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 21:50:48,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:50:48,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 21:50:48,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 21:50:48,645 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-22 21:50:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:50:48,925 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2020-08-22 21:50:48,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 21:50:48,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-08-22 21:50:48,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:50:48,946 INFO L225 Difference]: With dead ends: 164 [2020-08-22 21:50:48,946 INFO L226 Difference]: Without dead ends: 81 [2020-08-22 21:50:48,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 21:50:48,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-22 21:50:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-08-22 21:50:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-22 21:50:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-08-22 21:50:49,047 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 34 [2020-08-22 21:50:49,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:50:49,048 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-08-22 21:50:49,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 21:50:49,049 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-08-22 21:50:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-22 21:50:49,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:49,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:50:49,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:50:49,070 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:49,071 INFO L82 PathProgramCache]: Analyzing trace with hash -630897281, now seen corresponding path program 1 times [2020-08-22 21:50:49,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:49,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096617687] [2020-08-22 21:50:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:50:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:49,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 21:50:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:49,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 21:50:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:49,299 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 21:50:49,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096617687] [2020-08-22 21:50:49,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:50:49,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 21:50:49,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013535291] [2020-08-22 21:50:49,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 21:50:49,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:50:49,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 21:50:49,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 21:50:49,303 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 6 states. [2020-08-22 21:50:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:50:49,502 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-08-22 21:50:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 21:50:49,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-08-22 21:50:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:50:49,507 INFO L225 Difference]: With dead ends: 117 [2020-08-22 21:50:49,507 INFO L226 Difference]: Without dead ends: 86 [2020-08-22 21:50:49,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 21:50:49,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-22 21:50:49,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-08-22 21:50:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 21:50:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-08-22 21:50:49,524 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43 [2020-08-22 21:50:49,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:50:49,525 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-08-22 21:50:49,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 21:50:49,525 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-08-22 21:50:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 21:50:49,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:49,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:50:49,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:50:49,528 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:49,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:49,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1681903777, now seen corresponding path program 1 times [2020-08-22 21:50:49,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:49,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460114650] [2020-08-22 21:50:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:49,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:50:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 21:50:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:49,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 21:50:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:49,679 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 21:50:49,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460114650] [2020-08-22 21:50:49,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:50:49,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 21:50:49,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601814379] [2020-08-22 21:50:49,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 21:50:49,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:50:49,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 21:50:49,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 21:50:49,682 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-08-22 21:50:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:50:49,868 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-08-22 21:50:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 21:50:49,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-08-22 21:50:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:50:49,870 INFO L225 Difference]: With dead ends: 121 [2020-08-22 21:50:49,871 INFO L226 Difference]: Without dead ends: 90 [2020-08-22 21:50:49,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 21:50:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-22 21:50:49,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-08-22 21:50:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 21:50:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-08-22 21:50:49,884 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46 [2020-08-22 21:50:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:50:49,885 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-08-22 21:50:49,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 21:50:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-08-22 21:50:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 21:50:49,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:49,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:50:49,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 21:50:49,887 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:49,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:49,888 INFO L82 PathProgramCache]: Analyzing trace with hash -969429089, now seen corresponding path program 1 times [2020-08-22 21:50:49,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:49,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119830569] [2020-08-22 21:50:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:50:49,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:50:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:50:49,921 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:50:49,948 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 21:50:49,948 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 21:50:49,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 21:50:49,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:50:49 BoogieIcfgContainer [2020-08-22 21:50:49,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 21:50:49,989 INFO L168 Benchmark]: Toolchain (without parser) took 2722.17 ms. Allocated memory was 139.5 MB in the beginning and 232.3 MB in the end (delta: 92.8 MB). Free memory was 103.4 MB in the beginning and 116.9 MB in the end (delta: -13.5 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:49,990 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 21:50:49,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.34 ms. Allocated memory was 139.5 MB in the beginning and 207.1 MB in the end (delta: 67.6 MB). Free memory was 103.2 MB in the beginning and 186.0 MB in the end (delta: -82.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:49,991 INFO L168 Benchmark]: Boogie Preprocessor took 60.99 ms. Allocated memory is still 207.1 MB. Free memory was 186.0 MB in the beginning and 183.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:49,992 INFO L168 Benchmark]: RCFGBuilder took 423.71 ms. Allocated memory is still 207.1 MB. Free memory was 183.6 MB in the beginning and 160.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:49,993 INFO L168 Benchmark]: TraceAbstraction took 1747.84 ms. Allocated memory was 207.1 MB in the beginning and 232.3 MB in the end (delta: 25.2 MB). Free memory was 159.4 MB in the beginning and 116.9 MB in the end (delta: 42.5 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:49,997 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 482.34 ms. Allocated memory was 139.5 MB in the beginning and 207.1 MB in the end (delta: 67.6 MB). Free memory was 103.2 MB in the beginning and 186.0 MB in the end (delta: -82.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.99 ms. Allocated memory is still 207.1 MB. Free memory was 186.0 MB in the beginning and 183.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.71 ms. Allocated memory is still 207.1 MB. Free memory was 183.6 MB in the beginning and 160.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1747.84 ms. Allocated memory was 207.1 MB in the beginning and 232.3 MB in the end (delta: 25.2 MB). Free memory was 159.4 MB in the beginning and 116.9 MB in the end (delta: 42.5 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; VAL [y=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578694, \old(y)=0] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578694] [L20] __uint32_t w; VAL [\old(x)=4286578694, x=4286578694] [L23] ieee_float_shape_type gf_u; VAL [\old(x)=4286578694, gf_u={2:0}, x=4286578694] [L24] gf_u.value = (x) VAL [\old(x)=4286578694, gf_u={2:0}, x=4286578694] [L25] EXPR gf_u.word VAL [\old(x)=4286578694, gf_u={2:0}, gf_u.word=4286578689, x=4286578694] [L25] (w) = gf_u.word VAL [(w) = gf_u.word=4286578692, \old(x)=4286578694, gf_u={2:0}, gf_u.word=4286578689, w=4286578689, x=4286578694] [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578694, w=4286578689, x=4286578694] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578694, w=4286578689, x=4286578694] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578694, w=4286578689, x=4286578694] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) VAL [\old(x)=4286578694, w=4286578689, x=4286578694] [L39] return 0; VAL [\old(x)=4286578694, \result=0, w=4286578689, x=4286578694] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578694, \old(y)=0, __fpclassify_float(x)=0, x=4286578694, y=0] [L43] COND TRUE __fpclassify_float(x) == 0 VAL [\old(x)=4286578694, \old(y)=0, __fpclassify_float(x)=0, x=4286578694, y=0] [L44] return y; VAL [\old(x)=4286578694, \old(y)=0, \result=0, x=4286578694, y=0] [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0, x=4286578694, y=0] [L75] float res = fmax_float(x, y); VAL [fmax_float(x, y)=0, res=0, x=4286578694, y=0] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578694, y=0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578694, y=0] [L79] __VERIFIER_error() VAL [res=0, x=4286578694, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 267 SDtfs, 53 SDslu, 494 SDs, 0 SdLazy, 352 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 9534 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...