java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-benchs/divmul_buf_diverge_true-unreach-call_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 15:40:31,317 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 15:40:31,319 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 15:40:31,339 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 15:40:31,339 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 15:40:31,340 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 15:40:31,342 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 15:40:31,345 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 15:40:31,349 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 15:40:31,350 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 15:40:31,351 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 15:40:31,352 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 15:40:31,353 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 15:40:31,354 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 15:40:31,355 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 15:40:31,356 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 15:40:31,357 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 15:40:31,358 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 15:40:31,360 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 15:40:31,362 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 15:40:31,363 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 15:40:31,365 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 15:40:31,367 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 15:40:31,376 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-19 15:40:31,393 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 15:40:31,393 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 15:40:31,394 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 15:40:31,394 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 15:40:31,395 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 15:40:31,395 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 15:40:31,395 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 15:40:31,395 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 15:40:31,396 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 15:40:31,396 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 15:40:31,396 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 15:40:31,396 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 15:40:31,396 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 15:40:31,396 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 15:40:31,397 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 15:40:31,397 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 15:40:31,397 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 15:40:31,397 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 15:40:31,397 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 15:40:31,398 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 15:40:31,398 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 15:40:31,398 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 15:40:31,398 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 15:40:31,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 15:40:31,399 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 15:40:31,399 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 15:40:31,399 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 15:40:31,399 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 15:40:31,399 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 15:40:31,399 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 15:40:31,400 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 15:40:31,400 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 15:40:31,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 15:40:31,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 15:40:31,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 15:40:31,483 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 15:40:31,483 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 15:40:31,484 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/divmul_buf_diverge_true-unreach-call_true-termination.c [2018-09-19 15:40:31,787 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2296f29/79ec707b27ba4dda92414672e38333c8/FLAG62cc2d117 [2018-09-19 15:40:32,026 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 15:40:32,026 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/divmul_buf_diverge_true-unreach-call_true-termination.c [2018-09-19 15:40:32,034 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2296f29/79ec707b27ba4dda92414672e38333c8/FLAG62cc2d117 [2018-09-19 15:40:32,052 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2296f29/79ec707b27ba4dda92414672e38333c8 [2018-09-19 15:40:32,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 15:40:32,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 15:40:32,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 15:40:32,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 15:40:32,074 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 15:40:32,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:40:32" (1/1) ... [2018-09-19 15:40:32,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27628161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32, skipping insertion in model container [2018-09-19 15:40:32,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:40:32" (1/1) ... [2018-09-19 15:40:32,092 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 15:40:32,298 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:40:32,318 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 15:40:32,325 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:40:32,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32 WrapperNode [2018-09-19 15:40:32,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 15:40:32,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 15:40:32,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 15:40:32,344 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 15:40:32,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32" (1/1) ... [2018-09-19 15:40:32,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32" (1/1) ... [2018-09-19 15:40:32,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32" (1/1) ... [2018-09-19 15:40:32,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32" (1/1) ... [2018-09-19 15:40:32,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32" (1/1) ... [2018-09-19 15:40:32,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32" (1/1) ... [2018-09-19 15:40:32,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32" (1/1) ... [2018-09-19 15:40:32,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 15:40:32,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 15:40:32,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 15:40:32,384 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 15:40:32,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32" (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 [2018-09-19 15:40:32,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 15:40:32,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 15:40:32,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 15:40:32,454 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_clock [2018-09-19 15:40:32,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 15:40:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 15:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-09-19 15:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-19 15:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-19 15:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 15:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_clock [2018-09-19 15:40:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 15:40:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 15:40:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 15:40:33,092 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 15:40:33,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:40:33 BoogieIcfgContainer [2018-09-19 15:40:33,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 15:40:33,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 15:40:33,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 15:40:33,097 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 15:40:33,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 03:40:32" (1/3) ... [2018-09-19 15:40:33,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a65a2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:40:33, skipping insertion in model container [2018-09-19 15:40:33,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:32" (2/3) ... [2018-09-19 15:40:33,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a65a2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:40:33, skipping insertion in model container [2018-09-19 15:40:33,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:40:33" (3/3) ... [2018-09-19 15:40:33,101 INFO L112 eAbstractionObserver]: Analyzing ICFG divmul_buf_diverge_true-unreach-call_true-termination.c [2018-09-19 15:40:33,112 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 15:40:33,120 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 15:40:33,172 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 15:40:33,173 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 15:40:33,173 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 15:40:33,173 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 15:40:33,174 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 15:40:33,174 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 15:40:33,174 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 15:40:33,174 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 15:40:33,174 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 15:40:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-09-19 15:40:33,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-19 15:40:33,200 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:40:33,201 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:40:33,203 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:40:33,208 INFO L82 PathProgramCache]: Analyzing trace with hash -777563617, now seen corresponding path program 1 times [2018-09-19 15:40:33,212 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:40:33,213 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 15:40:33,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:40:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:40:33,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:40:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:40:33,278 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:40:33,291 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:40:33,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 15:40:33,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 15:40:33,307 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 15:40:33,308 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 15:40:33,311 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-09-19 15:40:33,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:40:33,335 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-09-19 15:40:33,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 15:40:33,337 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-19 15:40:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:40:33,346 INFO L225 Difference]: With dead ends: 37 [2018-09-19 15:40:33,347 INFO L226 Difference]: Without dead ends: 18 [2018-09-19 15:40:33,350 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 15:40:33,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-19 15:40:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-19 15:40:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-19 15:40:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-09-19 15:40:33,397 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2018-09-19 15:40:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:40:33,398 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-09-19 15:40:33,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 15:40:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-09-19 15:40:33,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-19 15:40:33,399 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:40:33,400 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:40:33,400 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:40:33,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1145892864, now seen corresponding path program 1 times [2018-09-19 15:40:33,401 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:40:33,401 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 15:40:33,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 15:40:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:40:33,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:40:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:40:33,484 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:40:33,493 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:40:33,494 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 15:40:33,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 15:40:33,495 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 15:40:33,496 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:40:33,496 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2018-09-19 15:40:33,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:40:33,564 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-09-19 15:40:33,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 15:40:33,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-19 15:40:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:40:33,567 INFO L225 Difference]: With dead ends: 29 [2018-09-19 15:40:33,568 INFO L226 Difference]: Without dead ends: 24 [2018-09-19 15:40:33,568 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:40:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-19 15:40:33,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-09-19 15:40:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-19 15:40:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-09-19 15:40:33,579 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 11 [2018-09-19 15:40:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:40:33,580 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-09-19 15:40:33,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 15:40:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-09-19 15:40:33,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-19 15:40:33,581 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:40:33,581 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:40:33,582 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:40:33,582 INFO L82 PathProgramCache]: Analyzing trace with hash 801798500, now seen corresponding path program 1 times [2018-09-19 15:40:33,583 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:40:33,583 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 15:40:33,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 15:40:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:40:33,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:40:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:40:33,791 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:40:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:40:33,878 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:40:33,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-09-19 15:40:33,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 15:40:33,879 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 15:40:33,879 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 15:40:33,880 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2018-09-19 15:40:34,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:40:34,115 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2018-09-19 15:40:34,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 15:40:34,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-09-19 15:40:34,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:40:34,117 INFO L225 Difference]: With dead ends: 43 [2018-09-19 15:40:34,117 INFO L226 Difference]: Without dead ends: 38 [2018-09-19 15:40:34,118 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-09-19 15:40:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-19 15:40:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-09-19 15:40:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-19 15:40:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-09-19 15:40:34,128 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-09-19 15:40:34,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:40:34,128 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-09-19 15:40:34,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 15:40:34,128 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-09-19 15:40:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-19 15:40:34,131 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:40:34,131 INFO L376 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:40:34,131 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:40:34,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1801372272, now seen corresponding path program 2 times [2018-09-19 15:40:34,132 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:40:34,133 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 15:40:34,139 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-19 15:40:34,581 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-19 15:40:34,581 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-19 15:40:34,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:40:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 15:40:34,721 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:40:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 15:40:35,337 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:40:35,337 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-09-19 15:40:35,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 15:40:35,338 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 15:40:35,339 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-09-19 15:40:35,339 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 12 states. [2018-09-19 15:40:35,953 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2018-09-19 15:40:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:40:36,196 INFO L93 Difference]: Finished difference Result 79 states and 103 transitions. [2018-09-19 15:40:36,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 15:40:36,197 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2018-09-19 15:40:36,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:40:36,199 INFO L225 Difference]: With dead ends: 79 [2018-09-19 15:40:36,199 INFO L226 Difference]: Without dead ends: 74 [2018-09-19 15:40:36,200 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2018-09-19 15:40:36,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-09-19 15:40:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-09-19 15:40:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-19 15:40:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2018-09-19 15:40:36,218 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 43 [2018-09-19 15:40:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:40:36,219 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2018-09-19 15:40:36,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 15:40:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2018-09-19 15:40:36,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-09-19 15:40:36,222 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:40:36,222 INFO L376 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:40:36,223 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:40:36,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1897822696, now seen corresponding path program 3 times [2018-09-19 15:40:36,224 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:40:36,224 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 15:40:36,229 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-09-19 15:40:36,382 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-09-19 15:40:36,382 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-19 15:40:36,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:40:39,167 WARN L819 $PredicateComparison]: unable to prove that (exists ((v_main_~buf~0_18 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 100.0))) (and (fp.geq v_main_~buf~0_18 (fp.neg .cse0)) (fp.leq v_main_~buf~0_18 .cse0) (= c_main_~x~0 (fp.div RNE v_main_~buf~0_18 ((_ to_fp 8 24) RNE (/ 31.0 10.0))))))) is different from true [2018-09-19 15:41:32,527 WARN L178 SmtUtils]: Spent 39.90 s on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2018-09-19 15:41:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2018-09-19 15:41:36,880 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:41:36,895 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:41:36,897 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 15:41:36,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 15:41:36,898 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 15:41:36,898 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=13, Unknown=2, NotChecked=6, Total=30 [2018-09-19 15:41:36,900 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 6 states. [2018-09-19 15:41:56,918 WARN L178 SmtUtils]: Spent 11.20 s on a formula simplification that was a NOOP. DAG size: 26 [2018-09-19 15:41:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:41:58,947 INFO L93 Difference]: Finished difference Result 124 states and 152 transitions. [2018-09-19 15:41:58,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 15:41:58,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-09-19 15:41:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:41:58,952 INFO L225 Difference]: With dead ends: 124 [2018-09-19 15:41:58,953 INFO L226 Difference]: Without dead ends: 119 [2018-09-19 15:41:58,953 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3s TimeCoverageRelationStatistics Valid=13, Invalid=18, Unknown=3, NotChecked=8, Total=42 [2018-09-19 15:41:58,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-19 15:41:58,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 74. [2018-09-19 15:41:58,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-19 15:41:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2018-09-19 15:41:58,977 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 91 [2018-09-19 15:41:58,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:41:58,978 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2018-09-19 15:41:58,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 15:41:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2018-09-19 15:41:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-09-19 15:41:58,980 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:41:58,981 INFO L376 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:41:58,981 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:41:58,981 INFO L82 PathProgramCache]: Analyzing trace with hash -2138979162, now seen corresponding path program 1 times [2018-09-19 15:41:58,982 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:41:58,982 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 15:41:58,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-19 15:41:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:42:00,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:42:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-09-19 15:42:00,308 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:42:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-09-19 15:42:01,019 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:42:01,019 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2018-09-19 15:42:01,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-19 15:42:01,020 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-19 15:42:01,021 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2018-09-19 15:42:01,021 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 24 states. [2018-09-19 15:42:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:42:03,396 INFO L93 Difference]: Finished difference Result 216 states and 283 transitions. [2018-09-19 15:42:03,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-19 15:42:03,396 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 91 [2018-09-19 15:42:03,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:42:03,401 INFO L225 Difference]: With dead ends: 216 [2018-09-19 15:42:03,401 INFO L226 Difference]: Without dead ends: 211 [2018-09-19 15:42:03,402 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2018-09-19 15:42:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-19 15:42:03,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 146. [2018-09-19 15:42:03,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-09-19 15:42:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 189 transitions. [2018-09-19 15:42:03,450 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 189 transitions. Word has length 91 [2018-09-19 15:42:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:42:03,451 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 189 transitions. [2018-09-19 15:42:03,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-19 15:42:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 189 transitions. [2018-09-19 15:42:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-09-19 15:42:03,456 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:42:03,456 INFO L376 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:42:03,456 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:42:03,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1040911702, now seen corresponding path program 2 times [2018-09-19 15:42:03,457 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:42:03,457 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 15:42:03,462 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-09-19 15:42:05,432 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-19 15:42:05,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-19 15:42:05,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:42:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-09-19 15:42:06,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:42:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-09-19 15:42:09,184 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:42:09,184 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2018-09-19 15:42:09,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-19 15:42:09,185 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-19 15:42:09,186 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2018-09-19 15:42:09,186 INFO L87 Difference]: Start difference. First operand 146 states and 189 transitions. Second operand 48 states. [2018-09-19 15:42:11,556 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 7 [2018-09-19 15:42:12,101 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 7 [2018-09-19 15:42:12,686 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 7 [2018-09-19 15:42:13,312 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 7 [2018-09-19 15:42:23,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:42:23,391 INFO L93 Difference]: Finished difference Result 420 states and 559 transitions. [2018-09-19 15:42:23,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-19 15:42:23,392 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 187 [2018-09-19 15:42:23,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:42:23,398 INFO L225 Difference]: With dead ends: 420 [2018-09-19 15:42:23,398 INFO L226 Difference]: Without dead ends: 415 [2018-09-19 15:42:23,401 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2018-09-19 15:42:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-09-19 15:42:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 290. [2018-09-19 15:42:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-09-19 15:42:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 381 transitions. [2018-09-19 15:42:23,465 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 381 transitions. Word has length 187 [2018-09-19 15:42:23,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:42:23,466 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 381 transitions. [2018-09-19 15:42:23,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-19 15:42:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 381 transitions. [2018-09-19 15:42:23,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-09-19 15:42:23,474 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:42:23,475 INFO L376 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:42:23,475 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:42:23,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1977147062, now seen corresponding path program 3 times [2018-09-19 15:42:23,476 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:42:23,476 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-19 15:42:23,490 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-09-19 15:42:23,881 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-19 15:42:23,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-19 15:42:23,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:42:26,290 WARN L819 $PredicateComparison]: unable to prove that (exists ((main_~tmp~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 100.0))) (and (fp.leq main_~tmp~0 .cse0) (= (fp.mul RNE main_~tmp~0 ((_ to_fp 8 24) RNE (/ 31.0 10.0))) c_main_~buf~0) (fp.geq main_~tmp~0 (fp.neg .cse0))))) is different from true [2018-09-19 15:42:28,634 WARN L819 $PredicateComparison]: unable to prove that (exists ((main_~tmp~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 100.0))) (and (fp.leq main_~tmp~0 .cse0) (fp.geq main_~tmp~0 (fp.neg .cse0)) (= (let ((.cse1 ((_ to_fp 8 24) RNE (/ 31.0 10.0)))) (fp.div RNE (fp.mul RNE main_~tmp~0 .cse1) .cse1)) c_main_~x~0)))) is different from true [2018-09-19 15:42:51,532 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2018-09-19 15:42:51,533 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:149) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:353) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:298) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:430) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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:316) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 45 more [2018-09-19 15:42:51,538 INFO L168 Benchmark]: Toolchain (without parser) took 139474.36 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 865.1 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -264.0 MB). Peak memory consumption was 601.1 MB. Max. memory is 7.1 GB. [2018-09-19 15:42:51,540 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 15:42:51,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 15:42:51,541 INFO L168 Benchmark]: Boogie Preprocessor took 39.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 15:42:51,542 INFO L168 Benchmark]: RCFGBuilder took 709.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-09-19 15:42:51,543 INFO L168 Benchmark]: TraceAbstraction took 138443.10 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 115.9 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 518.1 MB). Peak memory consumption was 633.9 MB. Max. memory is 7.1 GB. [2018-09-19 15:42:51,548 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 709.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 138443.10 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 115.9 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 518.1 MB). Peak memory consumption was 633.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...