/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 10:56:11,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 10:56:11,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 10:56:11,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 10:56:11,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 10:56:11,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 10:56:11,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 10:56:11,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 10:56:11,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 10:56:11,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 10:56:11,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 10:56:11,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 10:56:11,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 10:56:11,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 10:56:11,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 10:56:11,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 10:56:11,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 10:56:11,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 10:56:11,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 10:56:11,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 10:56:11,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 10:56:11,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 10:56:11,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 10:56:11,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 10:56:11,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 10:56:11,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 10:56:11,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 10:56:11,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 10:56:11,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 10:56:11,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 10:56:11,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 10:56:11,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 10:56:11,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 10:56:11,705 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 10:56:11,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 10:56:11,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 10:56:11,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 10:56:11,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 10:56:11,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 10:56:11,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 10:56:11,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 10:56:11,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 10:56:11,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 10:56:11,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 10:56:11,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 10:56:11,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 10:56:11,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 10:56:11,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 10:56:11,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 10:56:11,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 10:56:11,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:56:11,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 10:56:11,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 10:56:11,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 10:56:11,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 10:56:11,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 10:56:11,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 10:56:11,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 10:56:11,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 10:56:12,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 10:56:12,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 10:56:12,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 10:56:12,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 10:56:12,029 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 10:56:12,030 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-07-07 10:56:12,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a6b653ad/d2677796cf254dd18588a05c09b1e809/FLAGc7c6a336c [2020-07-07 10:56:12,603 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 10:56:12,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-07-07 10:56:12,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a6b653ad/d2677796cf254dd18588a05c09b1e809/FLAGc7c6a336c [2020-07-07 10:56:12,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a6b653ad/d2677796cf254dd18588a05c09b1e809 [2020-07-07 10:56:12,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 10:56:12,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 10:56:12,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 10:56:12,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 10:56:12,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 10:56:12,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:56:12" (1/1) ... [2020-07-07 10:56:12,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d52e2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:12, skipping insertion in model container [2020-07-07 10:56:12,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:56:12" (1/1) ... [2020-07-07 10:56:12,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 10:56:13,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 10:56:13,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:56:13,242 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 10:56:13,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:56:13,413 INFO L208 MainTranslator]: Completed translation [2020-07-07 10:56:13,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:13 WrapperNode [2020-07-07 10:56:13,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 10:56:13,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 10:56:13,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 10:56:13,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 10:56:13,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:13" (1/1) ... [2020-07-07 10:56:13,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:13" (1/1) ... [2020-07-07 10:56:13,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:13" (1/1) ... [2020-07-07 10:56:13,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:13" (1/1) ... [2020-07-07 10:56:13,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:13" (1/1) ... [2020-07-07 10:56:13,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:13" (1/1) ... [2020-07-07 10:56:13,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:13" (1/1) ... [2020-07-07 10:56:13,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 10:56:13,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 10:56:13,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 10:56:13,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 10:56:13,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:13" (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 [2020-07-07 10:56:13,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 10:56:13,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 10:56:13,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 10:56:13,542 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-07-07 10:56:13,542 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-07-07 10:56:13,542 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-07-07 10:56:13,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 10:56:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 10:56:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-07 10:56:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-07 10:56:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 10:56:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-07-07 10:56:13,544 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-07-07 10:56:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-07-07 10:56:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 10:56:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 10:56:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 10:56:13,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 10:56:13,986 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 10:56:13,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:56:13 BoogieIcfgContainer [2020-07-07 10:56:13,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 10:56:13,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 10:56:13,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 10:56:14,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 10:56:14,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 10:56:12" (1/3) ... [2020-07-07 10:56:14,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4106a308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:56:14, skipping insertion in model container [2020-07-07 10:56:14,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:13" (2/3) ... [2020-07-07 10:56:14,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4106a308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:56:14, skipping insertion in model container [2020-07-07 10:56:14,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:56:13" (3/3) ... [2020-07-07 10:56:14,006 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-07-07 10:56:14,017 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 10:56:14,024 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 10:56:14,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 10:56:14,064 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 10:56:14,065 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 10:56:14,065 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 10:56:14,065 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 10:56:14,065 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 10:56:14,065 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 10:56:14,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 10:56:14,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 10:56:14,085 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-07-07 10:56:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-07 10:56:14,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:14,095 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 10:56:14,095 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1312098946, now seen corresponding path program 1 times [2020-07-07 10:56:14,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:14,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100235458] [2020-07-07 10:56:14,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-07 10:56:14,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100235458] [2020-07-07 10:56:14,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:56:14,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 10:56:14,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202867298] [2020-07-07 10:56:14,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 10:56:14,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:14,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 10:56:14,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-07 10:56:14,885 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 10 states. [2020-07-07 10:56:17,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:17,374 INFO L93 Difference]: Finished difference Result 145 states and 223 transitions. [2020-07-07 10:56:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 10:56:17,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-07-07 10:56:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:17,392 INFO L225 Difference]: With dead ends: 145 [2020-07-07 10:56:17,392 INFO L226 Difference]: Without dead ends: 82 [2020-07-07 10:56:17,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-07-07 10:56:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-07 10:56:17,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2020-07-07 10:56:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-07 10:56:17,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-07 10:56:17,462 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 34 [2020-07-07 10:56:17,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:17,463 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-07 10:56:17,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 10:56:17,463 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-07 10:56:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-07 10:56:17,466 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:17,466 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 10:56:17,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 10:56:17,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:17,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1254840644, now seen corresponding path program 1 times [2020-07-07 10:56:17,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:17,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228780245] [2020-07-07 10:56:17,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-07 10:56:17,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228780245] [2020-07-07 10:56:17,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:56:17,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 10:56:17,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594934332] [2020-07-07 10:56:17,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 10:56:17,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:17,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 10:56:17,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-07-07 10:56:17,835 INFO L87 Difference]: Start difference. First operand 68 states and 94 transitions. Second operand 11 states. [2020-07-07 10:56:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:17,999 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2020-07-07 10:56:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 10:56:18,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-07-07 10:56:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:18,003 INFO L225 Difference]: With dead ends: 125 [2020-07-07 10:56:18,003 INFO L226 Difference]: Without dead ends: 89 [2020-07-07 10:56:18,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-07-07 10:56:18,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-07 10:56:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-07-07 10:56:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-07 10:56:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2020-07-07 10:56:18,025 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 34 [2020-07-07 10:56:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:18,026 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2020-07-07 10:56:18,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 10:56:18,026 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2020-07-07 10:56:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 10:56:18,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:18,030 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-07-07 10:56:18,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 10:56:18,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:18,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:18,032 INFO L82 PathProgramCache]: Analyzing trace with hash 837286191, now seen corresponding path program 1 times [2020-07-07 10:56:18,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:18,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445734640] [2020-07-07 10:56:18,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:18,178 ERROR L253 erpolLogProxyWrapper]: Interpolant 12 not inductive [2020-07-07 10:56:18,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 10:56:18,181 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:222) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:884) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:385) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 10:56:18,187 INFO L168 Benchmark]: Toolchain (without parser) took 5231.27 ms. Allocated memory was 135.8 MB in the beginning and 227.5 MB in the end (delta: 91.8 MB). Free memory was 99.7 MB in the beginning and 132.3 MB in the end (delta: -32.7 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. [2020-07-07 10:56:18,188 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 10:56:18,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.98 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 176.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-07-07 10:56:18,190 INFO L168 Benchmark]: Boogie Preprocessor took 50.91 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 175.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-07 10:56:18,191 INFO L168 Benchmark]: RCFGBuilder took 526.19 ms. Allocated memory is still 199.8 MB. Free memory was 175.4 MB in the beginning and 149.9 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-07-07 10:56:18,192 INFO L168 Benchmark]: TraceAbstraction took 4191.57 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 149.9 MB in the beginning and 132.3 MB in the end (delta: 17.6 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2020-07-07 10:56:18,196 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 456.98 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 176.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.91 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 175.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 526.19 ms. Allocated memory is still 199.8 MB. Free memory was 175.4 MB in the beginning and 149.9 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4191.57 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 149.9 MB in the beginning and 132.3 MB in the end (delta: 17.6 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...