/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:44,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:44,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:45,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:45,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:45,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:45,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:45,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:45,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:45,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:45,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:45,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:45,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:45,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:45,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:45,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:45,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:45,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:45,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:45,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:45,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:45,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:45,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:45,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:45,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:45,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:45,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:45,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:45,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:25:45,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:45,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:45,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:45,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:45,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:45,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:45,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:45,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:45,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:45,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:45,132 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:45,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:45,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:45,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:45,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:45,133 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:45,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:45,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:45,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:45,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:45,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:45,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:45,134 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:45,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:45,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:45,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:45,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:45,589 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:45,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-10-23 20:25:45,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d419999ef/123b6fa40f9c448fbfa114294acf1d92/FLAGfdc142b20 [2020-10-23 20:25:46,434 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:46,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-10-23 20:25:46,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d419999ef/123b6fa40f9c448fbfa114294acf1d92/FLAGfdc142b20 [2020-10-23 20:25:46,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d419999ef/123b6fa40f9c448fbfa114294acf1d92 [2020-10-23 20:25:46,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:46,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:46,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:46,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:46,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:46,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:46" (1/1) ... [2020-10-23 20:25:46,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3044c342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:46, skipping insertion in model container [2020-10-23 20:25:46,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:46" (1/1) ... [2020-10-23 20:25:46,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:46,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:47,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:47,119 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:47,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:47,187 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:47,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47 WrapperNode [2020-10-23 20:25:47,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:47,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:47,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:47,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:47,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:47,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:47,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:47,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:47,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (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 [2020-10-23 20:25:47,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:47,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:47,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:47,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 20:25:47,342 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-23 20:25:47,342 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-23 20:25:47,342 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-23 20:25:47,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-23 20:25:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 20:25:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 20:25:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-23 20:25:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-23 20:25:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-23 20:25:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:48,256 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:48,256 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 20:25:48,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:48 BoogieIcfgContainer [2020-10-23 20:25:48,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:48,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:48,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:48,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:48,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:46" (1/3) ... [2020-10-23 20:25:48,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad6290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:48, skipping insertion in model container [2020-10-23 20:25:48,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (2/3) ... [2020-10-23 20:25:48,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad6290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:48, skipping insertion in model container [2020-10-23 20:25:48,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:48" (3/3) ... [2020-10-23 20:25:48,269 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-10-23 20:25:48,283 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:48,289 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:48,305 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:48,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:48,332 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:48,332 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:48,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:48,332 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:48,333 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:48,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:48,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-10-23 20:25:48,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-23 20:25:48,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:48,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:48,368 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:48,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:48,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1333469154, now seen corresponding path program 1 times [2020-10-23 20:25:48,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:48,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788404590] [2020-10-23 20:25:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:48,489 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 20:25:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 20:25:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 20:25:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-23 20:25:49,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788404590] [2020-10-23 20:25:49,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:49,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 20:25:49,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808692671] [2020-10-23 20:25:49,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 20:25:49,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:49,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 20:25:49,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:25:49,077 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 9 states. [2020-10-23 20:25:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:50,649 INFO L93 Difference]: Finished difference Result 272 states and 338 transitions. [2020-10-23 20:25:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:25:50,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-23 20:25:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:50,666 INFO L225 Difference]: With dead ends: 272 [2020-10-23 20:25:50,667 INFO L226 Difference]: Without dead ends: 159 [2020-10-23 20:25:50,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:25:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-23 20:25:50,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 147. [2020-10-23 20:25:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-23 20:25:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2020-10-23 20:25:50,758 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 167 transitions. Word has length 90 [2020-10-23 20:25:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:50,760 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 167 transitions. [2020-10-23 20:25:50,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 20:25:50,761 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 167 transitions. [2020-10-23 20:25:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-23 20:25:50,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:50,766 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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, 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] [2020-10-23 20:25:50,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:50,767 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:50,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:50,767 INFO L82 PathProgramCache]: Analyzing trace with hash 486932698, now seen corresponding path program 1 times [2020-10-23 20:25:50,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:50,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093612496] [2020-10-23 20:25:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:50,772 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:50,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 20:25:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 20:25:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:51,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 20:25:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-23 20:25:51,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093612496] [2020-10-23 20:25:51,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:51,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:25:51,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301534659] [2020-10-23 20:25:51,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:25:51,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:51,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:25:51,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:25:51,073 INFO L87 Difference]: Start difference. First operand 147 states and 167 transitions. Second operand 10 states. [2020-10-23 20:25:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:53,004 INFO L93 Difference]: Finished difference Result 296 states and 342 transitions. [2020-10-23 20:25:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 20:25:53,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-23 20:25:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:53,014 INFO L225 Difference]: With dead ends: 296 [2020-10-23 20:25:53,015 INFO L226 Difference]: Without dead ends: 236 [2020-10-23 20:25:53,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-23 20:25:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-23 20:25:53,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-10-23 20:25:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-23 20:25:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 225 transitions. [2020-10-23 20:25:53,073 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 225 transitions. Word has length 94 [2020-10-23 20:25:53,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:53,077 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 225 transitions. [2020-10-23 20:25:53,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:25:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 225 transitions. [2020-10-23 20:25:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-23 20:25:53,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:53,081 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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, 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] [2020-10-23 20:25:53,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:53,081 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:53,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:53,082 INFO L82 PathProgramCache]: Analyzing trace with hash 972202118, now seen corresponding path program 1 times [2020-10-23 20:25:53,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:53,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104488402] [2020-10-23 20:25:53,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:53,087 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:53,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 20:25:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:53,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 20:25:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-23 20:25:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-23 20:25:53,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104488402] [2020-10-23 20:25:53,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:53,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:25:53,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020760874] [2020-10-23 20:25:53,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:25:53,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:53,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:25:53,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:25:53,324 INFO L87 Difference]: Start difference. First operand 195 states and 225 transitions. Second operand 11 states. [2020-10-23 20:25:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:54,965 INFO L93 Difference]: Finished difference Result 293 states and 335 transitions. [2020-10-23 20:25:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 20:25:54,967 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-10-23 20:25:54,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:54,973 INFO L225 Difference]: With dead ends: 293 [2020-10-23 20:25:54,973 INFO L226 Difference]: Without dead ends: 208 [2020-10-23 20:25:54,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:25:54,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-23 20:25:55,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 172. [2020-10-23 20:25:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-23 20:25:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 195 transitions. [2020-10-23 20:25:55,038 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 195 transitions. Word has length 97 [2020-10-23 20:25:55,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:55,038 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 195 transitions. [2020-10-23 20:25:55,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:25:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 195 transitions. [2020-10-23 20:25:55,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-23 20:25:55,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:55,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:55,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:25:55,042 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:55,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:55,042 INFO L82 PathProgramCache]: Analyzing trace with hash -388540522, now seen corresponding path program 2 times [2020-10-23 20:25:55,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:55,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648458750] [2020-10-23 20:25:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:55,047 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:55,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:55,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 20:25:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:55,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 20:25:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:55,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 20:25:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-23 20:25:55,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648458750] [2020-10-23 20:25:55,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:55,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 20:25:55,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361084236] [2020-10-23 20:25:55,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 20:25:55,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:55,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 20:25:55,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:25:55,714 INFO L87 Difference]: Start difference. First operand 172 states and 195 transitions. Second operand 16 states. [2020-10-23 20:25:59,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:59,044 INFO L93 Difference]: Finished difference Result 316 states and 373 transitions. [2020-10-23 20:25:59,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:25:59,045 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 98 [2020-10-23 20:25:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:59,052 INFO L225 Difference]: With dead ends: 316 [2020-10-23 20:25:59,054 INFO L226 Difference]: Without dead ends: 256 [2020-10-23 20:25:59,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2020-10-23 20:25:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-23 20:25:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 226. [2020-10-23 20:25:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-23 20:25:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 262 transitions. [2020-10-23 20:25:59,132 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 262 transitions. Word has length 98 [2020-10-23 20:25:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:59,134 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 262 transitions. [2020-10-23 20:25:59,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 20:25:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 262 transitions. [2020-10-23 20:25:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-23 20:25:59,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:59,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 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] [2020-10-23 20:25:59,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:25:59,147 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:59,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:59,148 INFO L82 PathProgramCache]: Analyzing trace with hash 295208225, now seen corresponding path program 1 times [2020-10-23 20:25:59,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:59,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117830336] [2020-10-23 20:25:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:59,153 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:59,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:59,267 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:59,313 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:59,313 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:59,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:25:59,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:59 BoogieIcfgContainer [2020-10-23 20:25:59,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:59,342 INFO L168 Benchmark]: Toolchain (without parser) took 12596.91 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 127.3 MB in the beginning and 121.1 MB in the end (delta: 6.2 MB). Peak memory consumption was 117.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:59,343 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:59,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.81 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 114.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:59,344 INFO L168 Benchmark]: Boogie Preprocessor took 56.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:59,345 INFO L168 Benchmark]: RCFGBuilder took 1012.54 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 115.0 MB in the end (delta: -2.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:59,346 INFO L168 Benchmark]: TraceAbstraction took 11078.07 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 114.5 MB in the beginning and 121.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 104.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:59,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 433.81 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 114.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1012.54 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 115.0 MB in the end (delta: -2.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11078.07 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 114.5 MB in the beginning and 121.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 104.0 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 bitwiseOr at line 105, overapproximation of bitwiseAnd at line 103. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L233] CALL, EXPR base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] RET, EXPR base2flt(0, 0) [L233] zero = base2flt(0, 0) [L234] CALL, EXPR base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] RET, EXPR base2flt(ma, ea) [L234] a = base2flt(ma, ea) [L235] CALL, EXPR base2flt(mb, eb) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] RET, EXPR base2flt(mb, eb) [L235] b = base2flt(mb, eb) [L236] CALL addflt(a, b) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L106] CALL __VERIFIER_assert(ea >= eb) [L8] COND TRUE !(cond) [L9] CALL reach_error() [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 181 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 614 SDtfs, 902 SDslu, 814 SDs, 0 SdLazy, 4999 SolverSat, 130 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 119 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...