/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 0.2.0-7d8eed3 [2020-11-07 00:25:16,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:25:16,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:25:16,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:25:16,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:25:16,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:25:16,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:25:16,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:25:16,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:25:16,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:25:16,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:25:16,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:25:16,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:25:16,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:25:16,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:25:16,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:25:16,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:25:16,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:25:16,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:25:16,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:25:16,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:25:16,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:25:16,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:25:16,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:25:16,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:25:16,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:25:16,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:25:16,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:25:16,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:25:16,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:25:16,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:25:16,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:25:16,520 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:25:16,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:25:16,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:25:16,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:25:16,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:25:16,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:25:16,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:25:16,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:25:16,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:25:16,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:25:16,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:25:16,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:25:16,524 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:25:16,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:25:16,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:25:16,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:25:16,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:25:16,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:25:16,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:25:16,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:25:16,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:25:16,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:25:16,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:25:16,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:25:16,973 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:25:16,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-11-07 00:25:17,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775d13e63/a4d1b7a44392448aaff4452669b48f82/FLAGd03a9e7df [2020-11-07 00:25:17,718 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:25:17,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-11-07 00:25:17,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775d13e63/a4d1b7a44392448aaff4452669b48f82/FLAGd03a9e7df [2020-11-07 00:25:18,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775d13e63/a4d1b7a44392448aaff4452669b48f82 [2020-11-07 00:25:18,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:25:18,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:25:18,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:18,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:25:18,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:25:18,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eaf3746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18, skipping insertion in model container [2020-11-07 00:25:18,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:25:18,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:25:18,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:18,391 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:25:18,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:18,528 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:25:18,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18 WrapperNode [2020-11-07 00:25:18,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:18,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:25:18,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:25:18,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:25:18,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... [2020-11-07 00:25:18,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:25:18,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:25:18,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:25:18,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:25:18,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:25:18,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:25:18,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:25:18,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:25:18,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 00:25:18,691 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-11-07 00:25:18,691 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-11-07 00:25:18,692 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-11-07 00:25:18,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:25:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:25:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:25:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:25:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:25:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-07 00:25:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 00:25:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 00:25:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-11-07 00:25:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-11-07 00:25:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-11-07 00:25:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:25:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:25:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:25:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:25:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:25:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:25:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:25:19,475 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:25:19,475 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-07 00:25:19,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:19 BoogieIcfgContainer [2020-11-07 00:25:19,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:25:19,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:25:19,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:25:19,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:25:19,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:25:18" (1/3) ... [2020-11-07 00:25:19,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a47b232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:19, skipping insertion in model container [2020-11-07 00:25:19,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:18" (2/3) ... [2020-11-07 00:25:19,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a47b232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:19, skipping insertion in model container [2020-11-07 00:25:19,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:19" (3/3) ... [2020-11-07 00:25:19,489 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-07 00:25:19,507 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:25:19,511 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:25:19,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:25:19,559 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:25:19,559 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:25:19,559 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:25:19,559 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:25:19,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:25:19,559 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:25:19,560 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:25:19,560 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:25:19,591 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-11-07 00:25:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-07 00:25:19,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:19,619 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] [2020-11-07 00:25:19,619 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:19,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:19,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1333469154, now seen corresponding path program 1 times [2020-11-07 00:25:19,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:19,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537470670] [2020-11-07 00:25:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:19,733 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:20,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 00:25:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:20,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-07 00:25:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:20,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-11-07 00:25:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-07 00:25:20,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537470670] [2020-11-07 00:25:20,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:20,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 00:25:20,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436117357] [2020-11-07 00:25:20,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 00:25:20,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:20,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 00:25:20,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:25:20,373 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 9 states. [2020-11-07 00:25:22,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:22,085 INFO L93 Difference]: Finished difference Result 272 states and 338 transitions. [2020-11-07 00:25:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 00:25:22,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-11-07 00:25:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:22,101 INFO L225 Difference]: With dead ends: 272 [2020-11-07 00:25:22,101 INFO L226 Difference]: Without dead ends: 159 [2020-11-07 00:25:22,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-11-07 00:25:22,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-07 00:25:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 147. [2020-11-07 00:25:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-07 00:25:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2020-11-07 00:25:22,190 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 167 transitions. Word has length 90 [2020-11-07 00:25:22,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:22,191 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 167 transitions. [2020-11-07 00:25:22,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 00:25:22,192 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 167 transitions. [2020-11-07 00:25:22,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-07 00:25:22,197 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:22,197 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] [2020-11-07 00:25:22,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:25:22,197 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:22,198 INFO L82 PathProgramCache]: Analyzing trace with hash 486932698, now seen corresponding path program 1 times [2020-11-07 00:25:22,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:22,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283160474] [2020-11-07 00:25:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:22,203 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:22,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 00:25:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:22,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-07 00:25:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:22,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-11-07 00:25:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-07 00:25:22,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283160474] [2020-11-07 00:25:22,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:22,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 00:25:22,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854390061] [2020-11-07 00:25:22,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 00:25:22,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:22,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 00:25:22,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-11-07 00:25:22,592 INFO L87 Difference]: Start difference. First operand 147 states and 167 transitions. Second operand 10 states. [2020-11-07 00:25:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:24,344 INFO L93 Difference]: Finished difference Result 296 states and 342 transitions. [2020-11-07 00:25:24,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 00:25:24,345 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-11-07 00:25:24,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:24,349 INFO L225 Difference]: With dead ends: 296 [2020-11-07 00:25:24,349 INFO L226 Difference]: Without dead ends: 236 [2020-11-07 00:25:24,351 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 [2020-11-07 00:25:24,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-11-07 00:25:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-11-07 00:25:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-11-07 00:25:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 225 transitions. [2020-11-07 00:25:24,403 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 225 transitions. Word has length 94 [2020-11-07 00:25:24,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:24,404 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 225 transitions. [2020-11-07 00:25:24,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 00:25:24,404 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 225 transitions. [2020-11-07 00:25:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-07 00:25:24,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:24,408 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] [2020-11-07 00:25:24,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:25:24,408 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:24,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash 972202118, now seen corresponding path program 1 times [2020-11-07 00:25:24,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:24,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470225372] [2020-11-07 00:25:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:24,413 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:24,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 00:25:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-07 00:25:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:24,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-11-07 00:25:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-07 00:25:24,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470225372] [2020-11-07 00:25:24,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:24,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 00:25:24,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344241671] [2020-11-07 00:25:24,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 00:25:24,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:24,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 00:25:24,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-11-07 00:25:24,725 INFO L87 Difference]: Start difference. First operand 195 states and 225 transitions. Second operand 11 states. [2020-11-07 00:25:26,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:26,244 INFO L93 Difference]: Finished difference Result 293 states and 335 transitions. [2020-11-07 00:25:26,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 00:25:26,245 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-11-07 00:25:26,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:26,249 INFO L225 Difference]: With dead ends: 293 [2020-11-07 00:25:26,251 INFO L226 Difference]: Without dead ends: 208 [2020-11-07 00:25:26,252 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 [2020-11-07 00:25:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-07 00:25:26,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 172. [2020-11-07 00:25:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-07 00:25:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 195 transitions. [2020-11-07 00:25:26,294 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 195 transitions. Word has length 97 [2020-11-07 00:25:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:26,295 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 195 transitions. [2020-11-07 00:25:26,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 00:25:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 195 transitions. [2020-11-07 00:25:26,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-07 00:25:26,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:26,298 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] [2020-11-07 00:25:26,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:25:26,299 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:26,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:26,299 INFO L82 PathProgramCache]: Analyzing trace with hash -388540522, now seen corresponding path program 2 times [2020-11-07 00:25:26,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:26,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712753974] [2020-11-07 00:25:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:26,303 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:26,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 00:25:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:26,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-07 00:25:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 00:25:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-07 00:25:26,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712753974] [2020-11-07 00:25:26,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:26,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-11-07 00:25:26,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402293788] [2020-11-07 00:25:26,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 00:25:26,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:26,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 00:25:26,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-11-07 00:25:26,939 INFO L87 Difference]: Start difference. First operand 172 states and 195 transitions. Second operand 16 states. [2020-11-07 00:25:30,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:30,143 INFO L93 Difference]: Finished difference Result 316 states and 373 transitions. [2020-11-07 00:25:30,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 00:25:30,145 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 98 [2020-11-07 00:25:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:30,149 INFO L225 Difference]: With dead ends: 316 [2020-11-07 00:25:30,150 INFO L226 Difference]: Without dead ends: 256 [2020-11-07 00:25:30,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2020-11-07 00:25:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-11-07 00:25:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 226. [2020-11-07 00:25:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-07 00:25:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 262 transitions. [2020-11-07 00:25:30,218 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 262 transitions. Word has length 98 [2020-11-07 00:25:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:30,219 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 262 transitions. [2020-11-07 00:25:30,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 00:25:30,219 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 262 transitions. [2020-11-07 00:25:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-07 00:25:30,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:30,222 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] [2020-11-07 00:25:30,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:25:30,222 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:30,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:30,223 INFO L82 PathProgramCache]: Analyzing trace with hash 295208225, now seen corresponding path program 1 times [2020-11-07 00:25:30,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:30,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343524446] [2020-11-07 00:25:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:30,226 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:25:30,254 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:25:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:25:30,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:25:30,338 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:25:30,338 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:25:30,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:25:30,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:25:30 BoogieIcfgContainer [2020-11-07 00:25:30,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:25:30,365 INFO L168 Benchmark]: Toolchain (without parser) took 12283.96 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 127.5 MB in the beginning and 120.1 MB in the end (delta: 7.5 MB). Peak memory consumption was 120.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:30,365 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:25:30,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.21 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 114.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:30,367 INFO L168 Benchmark]: Boogie Preprocessor took 56.40 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 112.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:30,368 INFO L168 Benchmark]: RCFGBuilder took 891.01 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 113.4 MB in the end (delta: -624.4 kB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:30,369 INFO L168 Benchmark]: TraceAbstraction took 10881.65 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 113.4 MB in the beginning and 120.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 105.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:30,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 438.21 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 114.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.40 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 112.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 891.01 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 113.4 MB in the end (delta: -624.4 kB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10881.65 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 113.4 MB in the beginning and 120.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 105.6 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: 10.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 8.2s, 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, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 3.0s 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...