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/nla-digbench/prodbin.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:19:33,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:19:33,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:19:33,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:19:33,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:19:33,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:19:33,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:19:33,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:19:33,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:19:33,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:19:33,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:19:33,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:19:33,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:19:33,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:19:33,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:19:33,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:19:33,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:19:33,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:19:33,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:19:33,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:19:33,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:19:33,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:19:33,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:19:33,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:19:33,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:19:33,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:19:33,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:19:33,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:19:33,334 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 [2019-09-03 20:19:33,360 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:19:33,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:19:33,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 20:19:33,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 20:19:33,363 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 20:19:33,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:19:33,364 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:19:33,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 20:19:33,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:19:33,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:19:33,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:19:33,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:19:33,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:19:33,366 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:19:33,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:19:33,366 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 20:19:33,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:19:33,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:19:33,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:19:33,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 20:19:33,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 20:19:33,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:19:33,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:19:33,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:19:33,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 20:19:33,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 20:19:33,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:19:33,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:19:33,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 20:19:33,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:19:33,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:19:33,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:19:33,421 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:19:33,421 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:19:33,422 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/prodbin.c [2019-09-03 20:19:33,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428c05646/f2e47575d6414c0caa4ff6ec83047d71/FLAG1ac40a0ff [2019-09-03 20:19:33,880 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:19:33,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/prodbin.c [2019-09-03 20:19:33,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428c05646/f2e47575d6414c0caa4ff6ec83047d71/FLAG1ac40a0ff [2019-09-03 20:19:34,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428c05646/f2e47575d6414c0caa4ff6ec83047d71 [2019-09-03 20:19:34,289 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:19:34,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:19:34,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:19:34,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:19:34,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:19:34,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:19:34" (1/1) ... [2019-09-03 20:19:34,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d2eccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34, skipping insertion in model container [2019-09-03 20:19:34,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:19:34" (1/1) ... [2019-09-03 20:19:34,307 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:19:34,322 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:19:34,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:19:34,509 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:19:34,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:19:34,546 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:19:34,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34 WrapperNode [2019-09-03 20:19:34,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:19:34,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:19:34,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:19:34,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:19:34,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34" (1/1) ... [2019-09-03 20:19:34,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34" (1/1) ... [2019-09-03 20:19:34,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34" (1/1) ... [2019-09-03 20:19:34,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34" (1/1) ... [2019-09-03 20:19:34,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34" (1/1) ... [2019-09-03 20:19:34,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34" (1/1) ... [2019-09-03 20:19:34,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34" (1/1) ... [2019-09-03 20:19:34,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:19:34,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:19:34,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:19:34,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:19:34,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34" (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 [2019-09-03 20:19:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:19:34,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:19:34,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:19:34,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:19:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:19:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-03 20:19:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 20:19:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:19:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:19:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:19:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:19:34,891 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:19:34,892 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 20:19:34,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:19:34 BoogieIcfgContainer [2019-09-03 20:19:34,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:19:34,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:19:34,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:19:34,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:19:34,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:19:34" (1/3) ... [2019-09-03 20:19:34,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c76808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:19:34, skipping insertion in model container [2019-09-03 20:19:34,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:19:34" (2/3) ... [2019-09-03 20:19:34,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c76808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:19:34, skipping insertion in model container [2019-09-03 20:19:34,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:19:34" (3/3) ... [2019-09-03 20:19:34,901 INFO L109 eAbstractionObserver]: Analyzing ICFG prodbin.c [2019-09-03 20:19:34,908 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:19:34,914 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:19:34,929 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:19:34,959 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 20:19:34,960 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:19:34,962 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 20:19:34,962 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:19:34,962 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:19:34,962 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:19:34,962 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:19:34,964 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:19:34,964 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:19:34,982 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-03 20:19:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 20:19:34,986 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:34,987 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:34,989 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:34,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1560104174, now seen corresponding path program 1 times [2019-09-03 20:19:34,995 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:34,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:35,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:35,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:35,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:19:35,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:19:35,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:19:35,101 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:19:35,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:19:35,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:19:35,115 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-03 20:19:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:35,138 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2019-09-03 20:19:35,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:19:35,140 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-03 20:19:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:35,149 INFO L225 Difference]: With dead ends: 39 [2019-09-03 20:19:35,150 INFO L226 Difference]: Without dead ends: 17 [2019-09-03 20:19:35,153 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:19:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-03 20:19:35,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-03 20:19:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-03 20:19:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-09-03 20:19:35,194 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2019-09-03 20:19:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:35,195 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-09-03 20:19:35,195 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:19:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-09-03 20:19:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 20:19:35,196 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:35,197 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:35,197 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:35,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:35,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1561891634, now seen corresponding path program 1 times [2019-09-03 20:19:35,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:35,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:35,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:35,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:35,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:35,205 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:35,206 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:35,206 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 20:19:35,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:35,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-03 20:19:35,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:35,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:19:35,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:19:35,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:19:35,479 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:19:35,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:19:35,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:19:35,480 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2019-09-03 20:19:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:35,578 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-09-03 20:19:35,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:19:35,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-03 20:19:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:35,581 INFO L225 Difference]: With dead ends: 33 [2019-09-03 20:19:35,581 INFO L226 Difference]: Without dead ends: 26 [2019-09-03 20:19:35,583 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:19:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-03 20:19:35,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-09-03 20:19:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-03 20:19:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-03 20:19:35,595 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2019-09-03 20:19:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:35,596 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-03 20:19:35,596 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:19:35,596 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-03 20:19:35,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-03 20:19:35,597 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:35,597 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:35,598 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:35,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:35,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1038075816, now seen corresponding path program 1 times [2019-09-03 20:19:35,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:35,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:35,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:35,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:35,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:35,614 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:35,614 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:35,614 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:35,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:35,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-03 20:19:35,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:35,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-03 20:19:35,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:35,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-03 20:19:35,838 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-03 20:19:35,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-03 20:19:35,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-03 20:19:35,839 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2019-09-03 20:19:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:36,006 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2019-09-03 20:19:36,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-03 20:19:36,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-09-03 20:19:36,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:36,009 INFO L225 Difference]: With dead ends: 39 [2019-09-03 20:19:36,009 INFO L226 Difference]: Without dead ends: 37 [2019-09-03 20:19:36,010 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-03 20:19:36,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-03 20:19:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2019-09-03 20:19:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-03 20:19:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-09-03 20:19:36,018 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 19 [2019-09-03 20:19:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:36,019 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-09-03 20:19:36,019 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-03 20:19:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-09-03 20:19:36,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-03 20:19:36,020 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:36,021 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:36,021 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:36,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1481884118, now seen corresponding path program 1 times [2019-09-03 20:19:36,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:36,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:36,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:36,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:36,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:36,027 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:36,027 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:36,027 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 20:19:36,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:36,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-03 20:19:36,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:36,188 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:19:36,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:36,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-09-03 20:19:36,236 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-03 20:19:36,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-03 20:19:36,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-03 20:19:36,237 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 7 states. [2019-09-03 20:19:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:36,352 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2019-09-03 20:19:36,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-03 20:19:36,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-09-03 20:19:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:36,356 INFO L225 Difference]: With dead ends: 49 [2019-09-03 20:19:36,356 INFO L226 Difference]: Without dead ends: 42 [2019-09-03 20:19:36,357 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-03 20:19:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-03 20:19:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-09-03 20:19:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-03 20:19:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2019-09-03 20:19:36,365 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 19 [2019-09-03 20:19:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:36,366 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2019-09-03 20:19:36,366 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-03 20:19:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2019-09-03 20:19:36,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-03 20:19:36,367 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:36,367 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:36,368 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:36,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:36,368 INFO L82 PathProgramCache]: Analyzing trace with hash 776909625, now seen corresponding path program 1 times [2019-09-03 20:19:36,368 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:36,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:36,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:36,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:36,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:36,373 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:36,374 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:36,374 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 20:19:36,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:36,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-03 20:19:36,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:36,499 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-03 20:19:36,525 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:36,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-03 20:19:36,526 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-03 20:19:36,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-03 20:19:36,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-03 20:19:36,527 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 9 states. [2019-09-03 20:19:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:36,644 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2019-09-03 20:19:36,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-03 20:19:36,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2019-09-03 20:19:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:36,645 INFO L225 Difference]: With dead ends: 47 [2019-09-03 20:19:36,645 INFO L226 Difference]: Without dead ends: 40 [2019-09-03 20:19:36,646 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-09-03 20:19:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-03 20:19:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2019-09-03 20:19:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-03 20:19:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2019-09-03 20:19:36,653 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 25 [2019-09-03 20:19:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:36,654 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2019-09-03 20:19:36,654 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-03 20:19:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2019-09-03 20:19:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-03 20:19:36,655 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:36,655 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:36,655 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:36,656 INFO L82 PathProgramCache]: Analyzing trace with hash -775079950, now seen corresponding path program 2 times [2019-09-03 20:19:36,656 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:36,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:36,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:36,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:36,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:36,661 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:36,661 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:36,661 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 20:19:36,676 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:36,693 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 20:19:36,693 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:19:36,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 34 conjunts are in the unsatisfiable core [2019-09-03 20:19:36,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:36,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:43,957 WARN L188 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 31 DAG size of output: 3 [2019-09-03 20:19:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-03 20:19:43,990 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:43,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-09-03 20:19:43,991 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-03 20:19:43,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-03 20:19:43,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=71, Unknown=1, NotChecked=0, Total=90 [2019-09-03 20:19:43,991 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2019-09-03 20:19:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:44,261 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2019-09-03 20:19:44,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-03 20:19:44,261 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2019-09-03 20:19:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:44,263 INFO L225 Difference]: With dead ends: 53 [2019-09-03 20:19:44,263 INFO L226 Difference]: Without dead ends: 51 [2019-09-03 20:19:44,264 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=22, Invalid=87, Unknown=1, NotChecked=0, Total=110 [2019-09-03 20:19:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-09-03 20:19:44,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2019-09-03 20:19:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-03 20:19:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2019-09-03 20:19:44,279 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 28 [2019-09-03 20:19:44,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:44,280 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2019-09-03 20:19:44,280 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-03 20:19:44,280 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2019-09-03 20:19:44,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-03 20:19:44,281 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:44,283 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:44,284 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:44,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:44,284 INFO L82 PathProgramCache]: Analyzing trace with hash 999927412, now seen corresponding path program 1 times [2019-09-03 20:19:44,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:44,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:44,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:44,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:19:44,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:44,295 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:44,295 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:44,295 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:44,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:19:44,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-03 20:19:44,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:44,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:44,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:44,617 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:44,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:44,691 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-03 20:19:44,751 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:44,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2019-09-03 20:19:44,752 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-03 20:19:44,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-03 20:19:44,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-09-03 20:19:44,753 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 12 states. [2019-09-03 20:19:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:45,380 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2019-09-03 20:19:45,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-03 20:19:45,381 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2019-09-03 20:19:45,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:45,384 INFO L225 Difference]: With dead ends: 57 [2019-09-03 20:19:45,384 INFO L226 Difference]: Without dead ends: 55 [2019-09-03 20:19:45,385 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-09-03 20:19:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-03 20:19:45,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2019-09-03 20:19:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-09-03 20:19:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2019-09-03 20:19:45,396 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 28 [2019-09-03 20:19:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:45,397 INFO L475 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-09-03 20:19:45,397 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-03 20:19:45,397 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2019-09-03 20:19:45,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-03 20:19:45,399 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:45,399 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:45,399 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:45,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1796148304, now seen corresponding path program 2 times [2019-09-03 20:19:45,400 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:45,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:45,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:45,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:19:45,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:45,405 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:45,405 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:45,405 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 20:19:45,424 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-03 20:19:45,437 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 20:19:45,437 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:45,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 29 conjunts are in the unsatisfiable core [2019-09-03 20:19:45,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:45,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-03 20:19:45,676 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:45,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-03 20:19:45,677 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-03 20:19:45,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-03 20:19:45,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-09-03 20:19:45,678 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 9 states. [2019-09-03 20:19:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:45,893 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2019-09-03 20:19:45,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-03 20:19:45,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2019-09-03 20:19:45,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:45,897 INFO L225 Difference]: With dead ends: 69 [2019-09-03 20:19:45,898 INFO L226 Difference]: Without dead ends: 67 [2019-09-03 20:19:45,898 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-09-03 20:19:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-09-03 20:19:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 40. [2019-09-03 20:19:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-03 20:19:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2019-09-03 20:19:45,907 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 28 [2019-09-03 20:19:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:45,908 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2019-09-03 20:19:45,908 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-03 20:19:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2019-09-03 20:19:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-03 20:19:45,909 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:45,909 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:45,909 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:45,910 INFO L82 PathProgramCache]: Analyzing trace with hash 389577448, now seen corresponding path program 3 times [2019-09-03 20:19:45,910 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:45,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:45,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:45,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:19:45,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:45,916 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:45,917 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:45,917 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:45,947 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-03 20:19:45,961 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-03 20:19:45,962 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:19:45,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-03 20:19:45,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:46,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:46,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:46,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Exception during sending of exit command (exit): Broken pipe [2019-09-03 20:19:46,167 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:46,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-09-03 20:19:46,167 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-03 20:19:46,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-03 20:19:46,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-09-03 20:19:46,168 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 11 states. [2019-09-03 20:19:50,426 WARN L188 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2019-09-03 20:19:50,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:50,491 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2019-09-03 20:19:50,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-03 20:19:50,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2019-09-03 20:19:50,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:50,492 INFO L225 Difference]: With dead ends: 74 [2019-09-03 20:19:50,492 INFO L226 Difference]: Without dead ends: 40 [2019-09-03 20:19:50,493 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2019-09-03 20:19:50,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-03 20:19:50,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-03 20:19:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-03 20:19:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-09-03 20:19:50,499 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2019-09-03 20:19:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:50,499 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-09-03 20:19:50,499 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-03 20:19:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-09-03 20:19:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-03 20:19:50,500 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:50,500 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:50,501 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:50,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1284065066, now seen corresponding path program 2 times [2019-09-03 20:19:50,501 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:50,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:50,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:50,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:19:50,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:50,508 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:50,508 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:50,508 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:50,525 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-03 20:19:50,538 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 20:19:50,539 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:19:50,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 29 conjunts are in the unsatisfiable core [2019-09-03 20:19:50,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:50,818 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Exception during sending of exit command (exit): Stream closed [2019-09-03 20:19:50,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:50,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-09-03 20:19:50,862 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-03 20:19:50,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-03 20:19:50,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-09-03 20:19:50,863 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 11 states. [2019-09-03 20:19:51,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:19:51,113 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-09-03 20:19:51,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-03 20:19:51,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2019-09-03 20:19:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:19:51,115 INFO L225 Difference]: With dead ends: 54 [2019-09-03 20:19:51,115 INFO L226 Difference]: Without dead ends: 52 [2019-09-03 20:19:51,116 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-09-03 20:19:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-03 20:19:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2019-09-03 20:19:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-09-03 20:19:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2019-09-03 20:19:51,123 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 37 [2019-09-03 20:19:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:19:51,123 INFO L475 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2019-09-03 20:19:51,123 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-03 20:19:51,123 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2019-09-03 20:19:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-03 20:19:51,125 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:19:51,125 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:19:51,125 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:19:51,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:19:51,125 INFO L82 PathProgramCache]: Analyzing trace with hash 393904434, now seen corresponding path program 3 times [2019-09-03 20:19:51,125 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:19:51,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:19:51,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:51,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:19:51,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:19:51,129 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:19:51,130 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:19:51,130 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:19:51,144 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-03 20:19:51,222 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-09-03 20:19:51,222 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:19:51,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-03 20:19:51,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:19:51,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:51,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:52,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:52,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:54,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:54,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:56,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:56,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:57,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:19:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 37 refuted. 2 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-03 20:19:58,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:19:58,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2019-09-03 20:19:58,039 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-03 20:19:58,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-03 20:19:58,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=140, Unknown=6, NotChecked=0, Total=182 [2019-09-03 20:19:58,039 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 14 states. [2019-09-03 20:20:08,706 WARN L188 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-03 20:20:09,592 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-03 20:20:11,965 WARN L188 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 49 [2019-09-03 20:20:16,373 WARN L188 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-03 20:20:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:20:22,103 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2019-09-03 20:20:22,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-03 20:20:22,103 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2019-09-03 20:20:22,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:20:22,105 INFO L225 Difference]: With dead ends: 63 [2019-09-03 20:20:22,105 INFO L226 Difference]: Without dead ends: 61 [2019-09-03 20:20:22,106 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=89, Invalid=364, Unknown=9, NotChecked=0, Total=462 [2019-09-03 20:20:22,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-09-03 20:20:22,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2019-09-03 20:20:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-09-03 20:20:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2019-09-03 20:20:22,115 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 46 [2019-09-03 20:20:22,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:20:22,115 INFO L475 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2019-09-03 20:20:22,115 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-03 20:20:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2019-09-03 20:20:22,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-03 20:20:22,116 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:20:22,117 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:20:22,117 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:20:22,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:20:22,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1368789034, now seen corresponding path program 4 times [2019-09-03 20:20:22,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:20:22,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:20:22,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:20:22,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:20:22,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:20:22,122 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:20:22,122 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:20:22,122 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 20:20:22,140 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:20:22,159 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-03 20:20:22,159 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:20:22,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 44 conjunts are in the unsatisfiable core [2019-09-03 20:20:22,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:20:22,619 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2019-09-03 20:20:23,096 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2019-09-03 20:20:23,526 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2019-09-03 20:20:25,760 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2019-09-03 20:20:26,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 12 proven. 70 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-03 20:20:26,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:20:26,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2019-09-03 20:20:26,144 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-03 20:20:26,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-03 20:20:26,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=264, Unknown=1, NotChecked=0, Total=306 [2019-09-03 20:20:26,146 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 18 states. [2019-09-03 20:20:28,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:20:28,338 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2019-09-03 20:20:28,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-03 20:20:28,340 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 55 [2019-09-03 20:20:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:20:28,342 INFO L225 Difference]: With dead ends: 72 [2019-09-03 20:20:28,342 INFO L226 Difference]: Without dead ends: 70 [2019-09-03 20:20:28,342 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=52, Invalid=327, Unknown=1, NotChecked=0, Total=380 [2019-09-03 20:20:28,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-09-03 20:20:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2019-09-03 20:20:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-09-03 20:20:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2019-09-03 20:20:28,351 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 55 [2019-09-03 20:20:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:20:28,352 INFO L475 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2019-09-03 20:20:28,352 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-03 20:20:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2019-09-03 20:20:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-03 20:20:28,353 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:20:28,353 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:20:28,354 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:20:28,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:20:28,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1447045070, now seen corresponding path program 5 times [2019-09-03 20:20:28,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:20:28,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:20:28,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:20:28,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:20:28,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:20:28,358 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:20:28,358 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:20:28,358 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:20:28,382 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-03 20:20:28,406 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-09-03 20:20:28,406 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:20:28,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 47 conjunts are in the unsatisfiable core [2019-09-03 20:20:28,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:20:28,957 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2019-09-03 20:20:29,226 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2019-09-03 20:20:29,641 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2019-09-03 20:20:29,936 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2019-09-03 20:20:30,204 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2019-09-03 20:20:30,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 14 proven. 100 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-09-03 20:20:30,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:20:30,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2019-09-03 20:20:30,554 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-03 20:20:30,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-03 20:20:30,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2019-09-03 20:20:30,555 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 20 states. [2019-09-03 20:20:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:20:33,015 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2019-09-03 20:20:33,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-03 20:20:33,015 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2019-09-03 20:20:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:20:33,017 INFO L225 Difference]: With dead ends: 81 [2019-09-03 20:20:33,017 INFO L226 Difference]: Without dead ends: 79 [2019-09-03 20:20:33,018 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-09-03 20:20:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-09-03 20:20:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2019-09-03 20:20:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-09-03 20:20:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2019-09-03 20:20:33,026 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 64 [2019-09-03 20:20:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:20:33,027 INFO L475 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2019-09-03 20:20:33,027 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-03 20:20:33,027 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2019-09-03 20:20:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-03 20:20:33,028 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:20:33,028 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:20:33,028 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:20:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:20:33,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1919064362, now seen corresponding path program 6 times [2019-09-03 20:20:33,029 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:20:33,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:20:33,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:20:33,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:20:33,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:20:33,033 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:20:33,033 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:20:33,033 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:20:33,048 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-03 20:20:33,125 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-09-03 20:20:33,126 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:20:33,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 35 conjunts are in the unsatisfiable core [2019-09-03 20:20:33,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:20:35,453 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-09-03 20:20:37,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:37,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:37,900 WARN L188 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2019-09-03 20:20:38,255 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-09-03 20:20:39,045 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2019-09-03 20:20:39,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:39,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:42,308 WARN L188 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-09-03 20:20:42,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:42,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:42,807 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2019-09-03 20:20:42,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:42,818 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:52,847 WARN L188 SmtUtils]: Spent 7.54 s on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-09-03 20:20:55,503 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-09-03 20:20:59,470 WARN L188 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-03 20:20:59,473 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:20:59,473 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:21:13,159 WARN L188 SmtUtils]: Spent 7.93 s on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-03 20:21:13,163 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:21:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 30 proven. 121 refuted. 12 times theorem prover too weak. 54 trivial. 0 not checked. [2019-09-03 20:21:13,258 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:21:13,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2019-09-03 20:21:13,259 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-03 20:21:13,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-03 20:21:13,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=300, Unknown=17, NotChecked=0, Total=380 [2019-09-03 20:21:13,260 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 20 states. [2019-09-03 20:21:16,794 WARN L188 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-03 20:21:24,320 WARN L188 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-03 20:21:30,055 WARN L188 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2019-09-03 20:21:34,659 WARN L188 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2019-09-03 20:21:37,436 WARN L188 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2019-09-03 20:21:42,871 WARN L188 SmtUtils]: Spent 4.47 s on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-03 20:21:54,010 WARN L188 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2019-09-03 20:21:56,640 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2019-09-03 20:22:11,241 WARN L188 SmtUtils]: Spent 9.43 s on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-09-03 20:22:24,045 WARN L188 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-09-03 20:22:28,643 WARN L188 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-09-03 20:22:57,512 WARN L188 SmtUtils]: Spent 10.29 s on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-03 20:23:31,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:23:31,509 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2019-09-03 20:23:31,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-03 20:23:31,510 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2019-09-03 20:23:31,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:23:31,511 INFO L225 Difference]: With dead ends: 90 [2019-09-03 20:23:31,512 INFO L226 Difference]: Without dead ends: 88 [2019-09-03 20:23:31,513 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 127.8s TimeCoverageRelationStatistics Valid=226, Invalid=989, Unknown=45, NotChecked=0, Total=1260 [2019-09-03 20:23:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-09-03 20:23:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2019-09-03 20:23:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-09-03 20:23:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2019-09-03 20:23:31,523 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 73 [2019-09-03 20:23:31,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:23:31,526 INFO L475 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2019-09-03 20:23:31,527 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-03 20:23:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2019-09-03 20:23:31,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-03 20:23:31,535 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:23:31,535 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:23:31,535 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:23:31,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:23:31,536 INFO L82 PathProgramCache]: Analyzing trace with hash -67277006, now seen corresponding path program 7 times [2019-09-03 20:23:31,536 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:23:31,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:23:31,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:23:31,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:23:31,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:23:31,540 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:23:31,540 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:23:31,540 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:23:31,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:23:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:23:31,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 62 conjunts are in the unsatisfiable core [2019-09-03 20:23:31,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:23:34,101 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2019-09-03 20:23:34,897 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2019-09-03 20:23:35,147 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2019-09-03 20:23:37,638 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2019-09-03 20:23:38,669 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-03 20:23:39,005 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-03 20:23:39,292 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:23:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 18 proven. 175 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-09-03 20:23:39,455 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:23:39,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2019-09-03 20:23:39,456 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-03 20:23:39,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-03 20:23:39,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2019-09-03 20:23:39,457 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 24 states. [2019-09-03 20:23:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:23:52,579 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2019-09-03 20:23:52,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-03 20:23:52,580 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 82 [2019-09-03 20:23:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:23:52,581 INFO L225 Difference]: With dead ends: 99 [2019-09-03 20:23:52,582 INFO L226 Difference]: Without dead ends: 97 [2019-09-03 20:23:52,582 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2019-09-03 20:23:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-09-03 20:23:52,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2019-09-03 20:23:52,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-09-03 20:23:52,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2019-09-03 20:23:52,602 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 82 [2019-09-03 20:23:52,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:23:52,603 INFO L475 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2019-09-03 20:23:52,603 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-03 20:23:52,603 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2019-09-03 20:23:52,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-09-03 20:23:52,609 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:23:52,609 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:23:52,610 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:23:52,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:23:52,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1501634006, now seen corresponding path program 8 times [2019-09-03 20:23:52,610 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:23:52,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:23:52,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:23:52,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:23:52,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:23:52,620 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:23:52,620 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:23:52,620 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 20:23:52,648 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:23:52,678 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 20:23:52,678 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:23:52,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 68 conjunts are in the unsatisfiable core [2019-09-03 20:23:52,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:23:52,853 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 18 [2019-09-03 20:23:54,592 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-03 20:23:54,830 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-03 20:23:55,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:23:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 17 proven. 223 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-09-03 20:23:55,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:23:55,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2019-09-03 20:23:55,174 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-03 20:23:55,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-03 20:23:55,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2019-09-03 20:23:55,174 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 26 states. [2019-09-03 20:23:59,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:23:59,174 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2019-09-03 20:23:59,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-03 20:23:59,178 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 91 [2019-09-03 20:23:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:23:59,180 INFO L225 Difference]: With dead ends: 108 [2019-09-03 20:23:59,180 INFO L226 Difference]: Without dead ends: 106 [2019-09-03 20:23:59,180 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-09-03 20:23:59,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-09-03 20:23:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2019-09-03 20:23:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-09-03 20:23:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2019-09-03 20:23:59,195 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 91 [2019-09-03 20:23:59,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:23:59,195 INFO L475 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2019-09-03 20:23:59,196 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-03 20:23:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2019-09-03 20:23:59,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-03 20:23:59,197 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:23:59,197 INFO L399 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:23:59,199 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:23:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:23:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1734130126, now seen corresponding path program 9 times [2019-09-03 20:23:59,200 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:23:59,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:23:59,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:23:59,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:23:59,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:23:59,206 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:23:59,206 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:23:59,206 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-03 20:23:59,224 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:23:59,349 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-09-03 20:23:59,349 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:23:59,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 34 conjunts are in the unsatisfiable core [2019-09-03 20:23:59,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:23:59,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:23:59,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:23:59,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:23:59,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:24:00,906 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2019-09-03 20:24:00,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:24:00,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:24:05,052 WARN L188 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2019-09-03 20:24:05,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:24:05,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:24:08,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:24:08,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:24:14,409 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2019-09-03 20:24:18,539 WARN L188 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2019-09-03 20:24:18,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:24:18,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:24:27,860 WARN L188 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-09-03 20:24:43,423 WARN L188 SmtUtils]: Spent 6.24 s on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-03 20:24:43,424 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:24:43,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:26:07,314 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-09-03 20:26:07,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:26:07,517 FATAL L? ?]: 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. stderr output: (error "out of memory") 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:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:581) 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:292) 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:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) 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:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) 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: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:1428) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:631) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2019-09-03 20:26:07,523 INFO L168 Benchmark]: Toolchain (without parser) took 393231.65 ms. Allocated memory was 140.0 MB in the beginning and 275.3 MB in the end (delta: 135.3 MB). Free memory was 87.3 MB in the beginning and 103.5 MB in the end (delta: -16.2 MB). Peak memory consumption was 119.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:26:07,523 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-09-03 20:26:07,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.61 ms. Allocated memory is still 140.0 MB. Free memory was 87.1 MB in the beginning and 77.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-03 20:26:07,525 INFO L168 Benchmark]: Boogie Preprocessor took 121.78 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 77.8 MB in the beginning and 176.6 MB in the end (delta: -98.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:26:07,525 INFO L168 Benchmark]: RCFGBuilder took 224.56 ms. Allocated memory is still 199.2 MB. Free memory was 176.0 MB in the beginning and 164.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-09-03 20:26:07,526 INFO L168 Benchmark]: TraceAbstraction took 392626.16 ms. Allocated memory was 199.2 MB in the beginning and 275.3 MB in the end (delta: 76.0 MB). Free memory was 164.4 MB in the beginning and 103.5 MB in the end (delta: 60.8 MB). Peak memory consumption was 136.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:26:07,535 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.61 ms. Allocated memory is still 140.0 MB. Free memory was 87.1 MB in the beginning and 77.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.78 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 77.8 MB in the beginning and 176.6 MB in the end (delta: -98.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 224.56 ms. Allocated memory is still 199.2 MB. Free memory was 176.0 MB in the beginning and 164.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 392626.16 ms. Allocated memory was 199.2 MB in the beginning and 275.3 MB in the end (delta: 76.0 MB). Free memory was 164.4 MB in the beginning and 103.5 MB in the end (delta: 60.8 MB). Peak memory consumption was 136.8 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. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : 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...