/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:11:50,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:11:50,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:11:50,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:11:50,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:11:50,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:11:50,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:11:50,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:11:50,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:11:50,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:11:50,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:11:50,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:11:50,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:11:50,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:11:50,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:11:50,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:11:50,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:11:50,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:11:50,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:11:50,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:11:50,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:11:50,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:11:50,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:11:50,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:11:50,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:11:50,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:11:50,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:11:50,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:11:50,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:11:50,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:11:50,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:11:50,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:11:50,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:11:50,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:11:50,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:11:50,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:11:50,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:11:50,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:11:50,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:11:50,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:11:50,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:11:50,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:11:50,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:11:50,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:11:50,394 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:11:50,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:11:50,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:11:50,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:11:50,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:11:50,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:11:50,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:11:50,396 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:11:50,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:11:50,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:11:50,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:11:50,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:11:50,864 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:11:50,866 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-04 16:11:50,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa89fd7da/e4878e37140a48e7b62fcf4575344b45/FLAG2a92e2f41 [2020-09-04 16:11:51,520 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:11:51,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-04 16:11:51,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa89fd7da/e4878e37140a48e7b62fcf4575344b45/FLAG2a92e2f41 [2020-09-04 16:11:51,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa89fd7da/e4878e37140a48e7b62fcf4575344b45 [2020-09-04 16:11:51,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:11:51,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:11:51,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:51,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:11:51,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:11:51,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:51" (1/1) ... [2020-09-04 16:11:51,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1190dd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:51, skipping insertion in model container [2020-09-04 16:11:51,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:51" (1/1) ... [2020-09-04 16:11:51,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:11:51,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:11:52,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:52,163 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:11:52,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:52,322 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:11:52,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:52 WrapperNode [2020-09-04 16:11:52,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:52,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:11:52,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:11:52,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:11:52,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:52" (1/1) ... [2020-09-04 16:11:52,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:52" (1/1) ... [2020-09-04 16:11:52,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:52" (1/1) ... [2020-09-04 16:11:52,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:52" (1/1) ... [2020-09-04 16:11:52,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:52" (1/1) ... [2020-09-04 16:11:52,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:52" (1/1) ... [2020-09-04 16:11:52,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:52" (1/1) ... [2020-09-04 16:11:52,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:11:52,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:11:52,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:11:52,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:11:52,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:11:52,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:11:52,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:11:52,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 16:11:52,456 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-04 16:11:52,457 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-04 16:11:52,457 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-04 16:11:52,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:11:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:11:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 16:11:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 16:11:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 16:11:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-04 16:11:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-04 16:11:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-04 16:11:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:11:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:11:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:11:52,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:11:52,977 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 16:11:52,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:52 BoogieIcfgContainer [2020-09-04 16:11:52,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:11:52,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:11:52,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:11:52,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:11:52,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:11:51" (1/3) ... [2020-09-04 16:11:52,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35014b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:52, skipping insertion in model container [2020-09-04 16:11:52,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:52" (2/3) ... [2020-09-04 16:11:52,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35014b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:52, skipping insertion in model container [2020-09-04 16:11:52,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:52" (3/3) ... [2020-09-04 16:11:52,994 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-09-04 16:11:53,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:11:53,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:11:53,037 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:11:53,061 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:11:53,062 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:11:53,062 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:11:53,062 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:11:53,062 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:11:53,062 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:11:53,063 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:11:53,064 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:11:53,083 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-09-04 16:11:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-04 16:11:53,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:53,102 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] [2020-09-04 16:11:53,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:53,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:53,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1377121462, now seen corresponding path program 1 times [2020-09-04 16:11:53,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:53,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396989127] [2020-09-04 16:11:53,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:53,187 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:53,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:11:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:53,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 16:11:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:53,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:11:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:53,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 16:11:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-04 16:11:53,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396989127] [2020-09-04 16:11:53,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:11:53,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:11:53,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571933696] [2020-09-04 16:11:53,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:11:53,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:11:53,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:11:53,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:11:53,653 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 8 states. [2020-09-04 16:11:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:11:53,932 INFO L93 Difference]: Finished difference Result 259 states and 324 transitions. [2020-09-04 16:11:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 16:11:53,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-09-04 16:11:53,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:11:53,953 INFO L225 Difference]: With dead ends: 259 [2020-09-04 16:11:53,953 INFO L226 Difference]: Without dead ends: 150 [2020-09-04 16:11:53,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:11:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-04 16:11:54,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 138. [2020-09-04 16:11:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-04 16:11:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-09-04 16:11:54,039 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 81 [2020-09-04 16:11:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:11:54,040 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-09-04 16:11:54,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:11:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-09-04 16:11:54,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 16:11:54,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:54,045 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] [2020-09-04 16:11:54,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:11:54,046 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:54,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:54,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1823732666, now seen corresponding path program 1 times [2020-09-04 16:11:54,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:54,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453622952] [2020-09-04 16:11:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:54,049 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:54,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:11:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:54,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 16:11:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:11:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:54,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 16:11:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-04 16:11:54,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453622952] [2020-09-04 16:11:54,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:11:54,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 16:11:54,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828324806] [2020-09-04 16:11:54,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 16:11:54,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:11:54,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 16:11:54,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:11:54,515 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 13 states. [2020-09-04 16:11:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:11:54,977 INFO L93 Difference]: Finished difference Result 277 states and 328 transitions. [2020-09-04 16:11:54,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:11:54,978 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-09-04 16:11:54,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:11:54,986 INFO L225 Difference]: With dead ends: 277 [2020-09-04 16:11:54,989 INFO L226 Difference]: Without dead ends: 218 [2020-09-04 16:11:54,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-09-04 16:11:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-04 16:11:55,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 188. [2020-09-04 16:11:55,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-04 16:11:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 220 transitions. [2020-09-04 16:11:55,046 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 220 transitions. Word has length 85 [2020-09-04 16:11:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:11:55,047 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 220 transitions. [2020-09-04 16:11:55,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 16:11:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 220 transitions. [2020-09-04 16:11:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-04 16:11:55,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:55,051 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] [2020-09-04 16:11:55,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:11:55,051 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:55,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash -955036012, now seen corresponding path program 1 times [2020-09-04 16:11:55,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:55,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220035432] [2020-09-04 16:11:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:55,055 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:11:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:55,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 16:11:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:11:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:55,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 16:11:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-04 16:11:55,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220035432] [2020-09-04 16:11:55,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:11:55,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 16:11:55,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401604487] [2020-09-04 16:11:55,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 16:11:55,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:11:55,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 16:11:55,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:11:55,302 INFO L87 Difference]: Start difference. First operand 188 states and 220 transitions. Second operand 9 states. [2020-09-04 16:11:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:11:55,518 INFO L93 Difference]: Finished difference Result 336 states and 392 transitions. [2020-09-04 16:11:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:11:55,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-04 16:11:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:11:55,522 INFO L225 Difference]: With dead ends: 336 [2020-09-04 16:11:55,522 INFO L226 Difference]: Without dead ends: 277 [2020-09-04 16:11:55,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-04 16:11:55,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-04 16:11:55,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 233. [2020-09-04 16:11:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-09-04 16:11:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 273 transitions. [2020-09-04 16:11:55,560 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 273 transitions. Word has length 86 [2020-09-04 16:11:55,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:11:55,560 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 273 transitions. [2020-09-04 16:11:55,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 16:11:55,561 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 273 transitions. [2020-09-04 16:11:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-04 16:11:55,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:55,565 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] [2020-09-04 16:11:55,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:11:55,565 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:55,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:55,565 INFO L82 PathProgramCache]: Analyzing trace with hash 808883757, now seen corresponding path program 1 times [2020-09-04 16:11:55,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:55,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197743768] [2020-09-04 16:11:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:55,571 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:11:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 16:11:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:11:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:55,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 16:11:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-04 16:11:55,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197743768] [2020-09-04 16:11:55,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:11:55,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 16:11:55,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780069516] [2020-09-04 16:11:55,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 16:11:55,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:11:55,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 16:11:55,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-04 16:11:55,820 INFO L87 Difference]: Start difference. First operand 233 states and 273 transitions. Second operand 10 states. [2020-09-04 16:11:56,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:11:56,062 INFO L93 Difference]: Finished difference Result 333 states and 385 transitions. [2020-09-04 16:11:56,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:11:56,062 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-09-04 16:11:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:11:56,070 INFO L225 Difference]: With dead ends: 333 [2020-09-04 16:11:56,070 INFO L226 Difference]: Without dead ends: 224 [2020-09-04 16:11:56,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-09-04 16:11:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-09-04 16:11:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 188. [2020-09-04 16:11:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-04 16:11:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2020-09-04 16:11:56,109 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 88 [2020-09-04 16:11:56,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:11:56,111 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2020-09-04 16:11:56,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 16:11:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2020-09-04 16:11:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-04 16:11:56,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:56,118 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] [2020-09-04 16:11:56,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:11:56,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:56,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1795206334, now seen corresponding path program 2 times [2020-09-04 16:11:56,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:56,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600147640] [2020-09-04 16:11:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:56,121 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:56,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:11:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:56,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 16:11:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:56,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:11:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:56,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 16:11:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-04 16:11:56,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600147640] [2020-09-04 16:11:56,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:11:56,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 16:11:56,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679511617] [2020-09-04 16:11:56,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 16:11:56,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:11:56,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 16:11:56,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-04 16:11:56,583 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand 15 states. [2020-09-04 16:11:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:11:57,337 INFO L93 Difference]: Finished difference Result 328 states and 385 transitions. [2020-09-04 16:11:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 16:11:57,338 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-09-04 16:11:57,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:11:57,340 INFO L225 Difference]: With dead ends: 328 [2020-09-04 16:11:57,340 INFO L226 Difference]: Without dead ends: 269 [2020-09-04 16:11:57,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-09-04 16:11:57,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-04 16:11:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 239. [2020-09-04 16:11:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-04 16:11:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 275 transitions. [2020-09-04 16:11:57,365 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 275 transitions. Word has length 89 [2020-09-04 16:11:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:11:57,365 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 275 transitions. [2020-09-04 16:11:57,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 16:11:57,366 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 275 transitions. [2020-09-04 16:11:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-04 16:11:57,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:57,368 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] [2020-09-04 16:11:57,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:11:57,368 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:57,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:57,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1839352304, now seen corresponding path program 1 times [2020-09-04 16:11:57,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:57,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419916735] [2020-09-04 16:11:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:57,371 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:57,390 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:57,406 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:57,434 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:11:57,434 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:11:57,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:11:57,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:11:57 BoogieIcfgContainer [2020-09-04 16:11:57,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:11:57,464 INFO L168 Benchmark]: Toolchain (without parser) took 5624.55 ms. Allocated memory was 138.9 MB in the beginning and 283.6 MB in the end (delta: 144.7 MB). Free memory was 102.7 MB in the beginning and 215.6 MB in the end (delta: -112.9 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:57,465 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:11:57,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.27 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 180.2 MB in the end (delta: -77.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:57,466 INFO L168 Benchmark]: Boogie Preprocessor took 52.24 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 178.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:57,467 INFO L168 Benchmark]: RCFGBuilder took 609.05 ms. Allocated memory is still 202.4 MB. Free memory was 178.1 MB in the beginning and 146.9 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:57,468 INFO L168 Benchmark]: TraceAbstraction took 4474.72 ms. Allocated memory was 202.4 MB in the beginning and 283.6 MB in the end (delta: 81.3 MB). Free memory was 146.3 MB in the beginning and 215.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:57,472 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 480.27 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 180.2 MB in the end (delta: -77.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.24 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 178.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 609.05 ms. Allocated memory is still 202.4 MB. Free memory was 178.1 MB in the beginning and 146.9 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4474.72 ms. Allocated memory was 202.4 MB in the beginning and 283.6 MB in the end (delta: 81.3 MB). Free memory was 146.3 MB in the beginning and 215.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L231] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] RET, EXPR base2flt(0, 0) [L231] zero = base2flt(0, 0) [L232] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L232] RET, EXPR base2flt(ma, ea) [L232] a = base2flt(ma, ea) [L233] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] RET, EXPR base2flt(mb, eb) [L233] b = base2flt(mb, eb) [L234] CALL addflt(a, b) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L104] CALL __VERIFIER_assert(ea >= eb) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 828 SDtfs, 418 SDslu, 6912 SDs, 0 SdLazy, 731 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=5, 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, 5 MinimizatonAttempts, 152 StatesRemovedByMinimization, 5 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...