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/loops/matrix-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:16:30,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:16:30,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:16:30,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:16:30,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:16:30,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:16:30,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:16:30,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:16:30,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:16:30,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:16:30,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:16:30,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:16:30,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:16:30,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:16:30,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:16:30,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:16:30,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:16:30,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:16:30,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:16:30,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:16:30,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:16:30,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:16:30,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:16:30,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:16:30,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:16:30,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:16:30,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:16:30,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:16:30,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:16:30,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:16:30,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:16:30,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:16:30,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:16:30,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:16:30,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:16:30,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:16:30,091 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 [2019-10-14 23:16:30,107 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:16:30,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:16:30,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:16:30,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:16:30,109 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:16:30,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:16:30,110 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:16:30,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:16:30,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:16:30,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:16:30,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:16:30,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:16:30,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:16:30,116 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:16:30,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:16:30,116 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:16:30,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:16:30,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:16:30,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:16:30,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:16:30,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:16:30,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:16:30,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:16:30,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:16:30,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:16:30,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:16:30,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:16:30,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:16:30,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:16:30,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:16:30,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:16:30,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:16:30,435 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:16:30,435 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:16:30,437 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-1.c [2019-10-14 23:16:30,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d2043d4/e026ea9c4fb943a4bb63576995494759/FLAG4705b5b50 [2019-10-14 23:16:30,973 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:16:30,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-1.c [2019-10-14 23:16:30,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d2043d4/e026ea9c4fb943a4bb63576995494759/FLAG4705b5b50 [2019-10-14 23:16:31,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d2043d4/e026ea9c4fb943a4bb63576995494759 [2019-10-14 23:16:31,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:16:31,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:16:31,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:16:31,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:16:31,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:16:31,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:31" (1/1) ... [2019-10-14 23:16:31,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc525ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31, skipping insertion in model container [2019-10-14 23:16:31,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:31" (1/1) ... [2019-10-14 23:16:31,414 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:16:31,431 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:16:31,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:16:31,651 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:16:31,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:16:31,778 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:16:31,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31 WrapperNode [2019-10-14 23:16:31,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:16:31,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:16:31,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:16:31,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:16:31,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31" (1/1) ... [2019-10-14 23:16:31,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31" (1/1) ... [2019-10-14 23:16:31,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31" (1/1) ... [2019-10-14 23:16:31,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31" (1/1) ... [2019-10-14 23:16:31,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31" (1/1) ... [2019-10-14 23:16:31,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31" (1/1) ... [2019-10-14 23:16:31,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31" (1/1) ... [2019-10-14 23:16:31,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:16:31,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:16:31,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:16:31,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:16:31,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31" (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 [2019-10-14 23:16:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:16:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:16:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:16:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:16:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:16:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:16:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:16:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:16:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:16:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:16:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:16:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:16:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:16:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:16:32,153 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:16:32,154 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-14 23:16:32,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:32 BoogieIcfgContainer [2019-10-14 23:16:32,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:16:32,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:16:32,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:16:32,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:16:32,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:16:31" (1/3) ... [2019-10-14 23:16:32,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644b4667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:32, skipping insertion in model container [2019-10-14 23:16:32,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:31" (2/3) ... [2019-10-14 23:16:32,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644b4667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:32, skipping insertion in model container [2019-10-14 23:16:32,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:32" (3/3) ... [2019-10-14 23:16:32,175 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2019-10-14 23:16:32,183 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:16:32,190 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:16:32,201 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:16:32,224 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:16:32,224 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:16:32,224 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:16:32,224 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:16:32,224 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:16:32,224 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:16:32,225 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:16:32,225 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:16:32,241 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-14 23:16:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-14 23:16:32,247 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:32,248 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:32,249 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:32,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:32,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1330517862, now seen corresponding path program 1 times [2019-10-14 23:16:32,261 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:32,261 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990102110] [2019-10-14 23:16:32,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:32,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:32,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:32,345 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:16:32,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656930518] [2019-10-14 23:16:32,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:32,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:16:32,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:32,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990102110] [2019-10-14 23:16:32,428 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:16:32,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656930518] [2019-10-14 23:16:32,429 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:16:32,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:16:32,430 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136558329] [2019-10-14 23:16:32,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:16:32,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:32,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:16:32,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:16:32,448 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-14 23:16:32,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:32,473 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2019-10-14 23:16:32,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:16:32,475 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-10-14 23:16:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:32,484 INFO L225 Difference]: With dead ends: 42 [2019-10-14 23:16:32,484 INFO L226 Difference]: Without dead ends: 17 [2019-10-14 23:16:32,487 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:16:32,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-14 23:16:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-14 23:16:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-14 23:16:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-10-14 23:16:32,521 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2019-10-14 23:16:32,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:32,522 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-10-14 23:16:32,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:16:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-10-14 23:16:32,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-14 23:16:32,522 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:32,523 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:32,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:32,724 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:32,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:32,726 INFO L82 PathProgramCache]: Analyzing trace with hash 672047389, now seen corresponding path program 1 times [2019-10-14 23:16:32,726 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:32,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469994486] [2019-10-14 23:16:32,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:32,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:32,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:32,739 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:16:32,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289074708] [2019-10-14 23:16:32,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-14 23:16:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:32,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:16:32,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:32,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469994486] [2019-10-14 23:16:32,827 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:16:32,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289074708] [2019-10-14 23:16:32,828 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:16:32,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:16:32,829 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357654705] [2019-10-14 23:16:32,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:16:32,831 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:32,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:16:32,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:16:32,833 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2019-10-14 23:16:32,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:32,883 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-10-14 23:16:32,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:16:32,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-14 23:16:32,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:32,885 INFO L225 Difference]: With dead ends: 28 [2019-10-14 23:16:32,885 INFO L226 Difference]: Without dead ends: 22 [2019-10-14 23:16:32,886 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:16:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-14 23:16:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-10-14 23:16:32,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-14 23:16:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-10-14 23:16:32,892 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2019-10-14 23:16:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:32,893 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-10-14 23:16:32,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:16:32,893 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-10-14 23:16:32,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 23:16:32,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:32,894 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:33,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:33,104 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:33,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:33,105 INFO L82 PathProgramCache]: Analyzing trace with hash -830834987, now seen corresponding path program 1 times [2019-10-14 23:16:33,106 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:33,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941538633] [2019-10-14 23:16:33,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:33,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:33,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:33,117 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:16:33,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072062118] [2019-10-14 23:16:33,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:33,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-14 23:16:33,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:33,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941538633] [2019-10-14 23:16:33,200 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:16:33,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072062118] [2019-10-14 23:16:33,200 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:16:33,200 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:16:33,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472806375] [2019-10-14 23:16:33,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:16:33,201 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:33,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:16:33,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:16:33,202 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2019-10-14 23:16:33,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:33,271 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-10-14 23:16:33,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:16:33,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-14 23:16:33,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:33,273 INFO L225 Difference]: With dead ends: 36 [2019-10-14 23:16:33,273 INFO L226 Difference]: Without dead ends: 25 [2019-10-14 23:16:33,274 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:16:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-14 23:16:33,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2019-10-14 23:16:33,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-14 23:16:33,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-14 23:16:33,279 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-10-14 23:16:33,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:33,280 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-14 23:16:33,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:16:33,280 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-14 23:16:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 23:16:33,281 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:33,281 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:33,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:33,488 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:33,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:33,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1529445450, now seen corresponding path program 1 times [2019-10-14 23:16:33,489 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:33,489 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322610192] [2019-10-14 23:16:33,489 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:33,490 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:33,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:33,499 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:16:33,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670769639] [2019-10-14 23:16:33,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:33,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-14 23:16:33,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:33,688 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-14 23:16:33,689 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:34,048 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 27 [2019-10-14 23:16:34,049 INFO L567 ElimStorePlain]: treesize reduction 349, result has 9.4 percent of original size [2019-10-14 23:16:34,049 INFO L464 ElimStorePlain]: Eliminatee v_prenex_1 vanished before elimination [2019-10-14 23:16:34,050 INFO L464 ElimStorePlain]: Eliminatee v_prenex_13 vanished before elimination [2019-10-14 23:16:34,050 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_int_7| vanished before elimination [2019-10-14 23:16:34,050 INFO L464 ElimStorePlain]: Eliminatee v_prenex_11 vanished before elimination [2019-10-14 23:16:34,066 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2019-10-14 23:16:34,066 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:34,081 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:16:34,081 INFO L464 ElimStorePlain]: Eliminatee v_prenex_5 vanished before elimination [2019-10-14 23:16:34,081 INFO L464 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2019-10-14 23:16:34,082 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:16:34,082 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:441, output treesize:10 [2019-10-14 23:16:34,100 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-14 23:16:34,102 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:34,104 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:16:34,105 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:16:34,105 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-10-14 23:16:34,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:34,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322610192] [2019-10-14 23:16:34,139 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:16:34,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670769639] [2019-10-14 23:16:34,140 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:16:34,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-10-14 23:16:34,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841432903] [2019-10-14 23:16:34,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:16:34,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:34,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:16:34,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:16:34,142 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 8 states. [2019-10-14 23:16:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:34,328 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2019-10-14 23:16:34,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:16:34,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-10-14 23:16:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:34,329 INFO L225 Difference]: With dead ends: 37 [2019-10-14 23:16:34,330 INFO L226 Difference]: Without dead ends: 31 [2019-10-14 23:16:34,330 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:16:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-14 23:16:34,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2019-10-14 23:16:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-14 23:16:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-14 23:16:34,336 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2019-10-14 23:16:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:34,337 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-14 23:16:34,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:16:34,337 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-14 23:16:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 23:16:34,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:34,338 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:34,542 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:34,542 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:34,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1922472460, now seen corresponding path program 1 times [2019-10-14 23:16:34,544 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:34,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944987221] [2019-10-14 23:16:34,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:34,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:34,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:34,553 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:16:34,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172731915] [2019-10-14 23:16:34,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:34,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-14 23:16:34,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:34,652 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-14 23:16:34,653 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:34,714 INFO L567 ElimStorePlain]: treesize reduction 138, result has 26.6 percent of original size [2019-10-14 23:16:34,714 INFO L464 ElimStorePlain]: Eliminatee v_prenex_18 vanished before elimination [2019-10-14 23:16:34,719 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2019-10-14 23:16:34,720 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:34,732 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:16:34,732 INFO L464 ElimStorePlain]: Eliminatee v_prenex_16 vanished before elimination [2019-10-14 23:16:34,733 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:16:34,733 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:251, output treesize:28 [2019-10-14 23:16:34,828 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-10-14 23:16:34,829 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:34,834 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:16:34,834 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:16:34,835 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2019-10-14 23:16:34,853 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:34,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944987221] [2019-10-14 23:16:34,892 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:16:34,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172731915] [2019-10-14 23:16:34,893 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:16:34,893 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2019-10-14 23:16:34,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766421291] [2019-10-14 23:16:34,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:16:34,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:34,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:16:34,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:16:34,897 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 12 states. [2019-10-14 23:16:35,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:35,157 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-10-14 23:16:35,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:16:35,158 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-10-14 23:16:35,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:35,159 INFO L225 Difference]: With dead ends: 49 [2019-10-14 23:16:35,159 INFO L226 Difference]: Without dead ends: 32 [2019-10-14 23:16:35,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:16:35,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-14 23:16:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2019-10-14 23:16:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-14 23:16:35,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-10-14 23:16:35,168 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 18 [2019-10-14 23:16:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:35,168 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-10-14 23:16:35,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:16:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-10-14 23:16:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-14 23:16:35,169 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:35,169 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:35,372 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:35,373 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:35,374 INFO L82 PathProgramCache]: Analyzing trace with hash -422232267, now seen corresponding path program 2 times [2019-10-14 23:16:35,375 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:35,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56854909] [2019-10-14 23:16:35,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:35,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:35,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:35,388 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:16:35,388 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99590977] [2019-10-14 23:16:35,388 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-10-14 23:16:35,463 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:16:35,464 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:35,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:16:35,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:35,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56854909] [2019-10-14 23:16:35,502 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:16:35,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99590977] [2019-10-14 23:16:35,503 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:16:35,503 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-14 23:16:35,503 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594837308] [2019-10-14 23:16:35,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:16:35,504 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:35,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:16:35,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:16:35,505 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-10-14 23:16:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:35,535 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2019-10-14 23:16:35,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:16:35,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-14 23:16:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:35,537 INFO L225 Difference]: With dead ends: 42 [2019-10-14 23:16:35,537 INFO L226 Difference]: Without dead ends: 26 [2019-10-14 23:16:35,537 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:16:35,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-14 23:16:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-10-14 23:16:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-14 23:16:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-10-14 23:16:35,557 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2019-10-14 23:16:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:35,557 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-10-14 23:16:35,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:16:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-10-14 23:16:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:16:35,559 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:35,559 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:35,762 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:35,763 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:35,764 INFO L82 PathProgramCache]: Analyzing trace with hash 239488911, now seen corresponding path program 3 times [2019-10-14 23:16:35,764 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:35,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652905285] [2019-10-14 23:16:35,765 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:35,765 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:35,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:35,774 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:16:35,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552233561] [2019-10-14 23:16:35,774 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:35,859 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-14 23:16:35,860 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:35,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-14 23:16:35,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:35,916 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-14 23:16:35,916 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,091 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 27 [2019-10-14 23:16:36,091 INFO L567 ElimStorePlain]: treesize reduction 400, result has 8.3 percent of original size [2019-10-14 23:16:36,091 INFO L464 ElimStorePlain]: Eliminatee v_prenex_31 vanished before elimination [2019-10-14 23:16:36,092 INFO L464 ElimStorePlain]: Eliminatee v_prenex_25 vanished before elimination [2019-10-14 23:16:36,092 INFO L464 ElimStorePlain]: Eliminatee v_prenex_23 vanished before elimination [2019-10-14 23:16:36,092 INFO L464 ElimStorePlain]: Eliminatee v_prenex_33 vanished before elimination [2019-10-14 23:16:36,092 INFO L464 ElimStorePlain]: Eliminatee v_prenex_29 vanished before elimination [2019-10-14 23:16:36,096 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2019-10-14 23:16:36,096 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,106 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:16:36,107 INFO L464 ElimStorePlain]: Eliminatee v_prenex_27 vanished before elimination [2019-10-14 23:16:36,107 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,108 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:497, output treesize:10 [2019-10-14 23:16:36,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,125 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,169 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:16:36,180 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2019-10-14 23:16:36,181 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,192 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-14 23:16:36,193 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,205 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-14 23:16:36,205 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,212 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-14 23:16:36,213 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,245 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:16:36,245 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 126 [2019-10-14 23:16:36,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,248 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,254 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-14 23:16:36,254 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,259 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-14 23:16:36,260 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,264 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-14 23:16:36,265 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,373 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2019-10-14 23:16:36,373 INFO L567 ElimStorePlain]: treesize reduction 47, result has 77.2 percent of original size [2019-10-14 23:16:36,374 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-14 23:16:36,375 INFO L221 ElimStorePlain]: Needed 9 recursive calls to eliminate 2 variables, input treesize:701, output treesize:113 [2019-10-14 23:16:36,423 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,424 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,424 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,429 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,430 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,439 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,440 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,442 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,446 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,447 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,449 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,450 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,451 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,763 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:16:36,763 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2019-10-14 23:16:36,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,765 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-14 23:16:36,779 INFO L567 ElimStorePlain]: treesize reduction 31, result has 35.4 percent of original size [2019-10-14 23:16:36,780 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:16:36,781 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:54, output treesize:3 [2019-10-14 23:16:36,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:16:36,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652905285] [2019-10-14 23:16:36,822 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:16:36,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552233561] [2019-10-14 23:16:36,822 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:16:36,822 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-10-14 23:16:36,823 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053625925] [2019-10-14 23:16:36,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:16:36,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:36,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:16:36,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:16:36,824 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2019-10-14 23:16:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:37,107 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-10-14 23:16:37,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:16:37,108 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-10-14 23:16:37,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:37,109 INFO L225 Difference]: With dead ends: 37 [2019-10-14 23:16:37,110 INFO L226 Difference]: Without dead ends: 31 [2019-10-14 23:16:37,110 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:16:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-14 23:16:37,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2019-10-14 23:16:37,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-14 23:16:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-14 23:16:37,115 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2019-10-14 23:16:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:37,116 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-14 23:16:37,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:16:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-14 23:16:37,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:16:37,117 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:37,117 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:37,320 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:37,321 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:37,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:37,321 INFO L82 PathProgramCache]: Analyzing trace with hash -153538099, now seen corresponding path program 1 times [2019-10-14 23:16:37,322 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:37,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284059834] [2019-10-14 23:16:37,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:37,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:37,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:37,329 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:16:37,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038568656] [2019-10-14 23:16:37,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-14 23:16:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:37,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:16:37,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:16:37,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284059834] [2019-10-14 23:16:37,422 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:16:37,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038568656] [2019-10-14 23:16:37,422 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:16:37,422 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-10-14 23:16:37,423 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233233587] [2019-10-14 23:16:37,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:16:37,423 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:37,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:16:37,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:16:37,424 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 4 states. [2019-10-14 23:16:37,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:37,439 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2019-10-14 23:16:37,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:16:37,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-10-14 23:16:37,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:37,441 INFO L225 Difference]: With dead ends: 31 [2019-10-14 23:16:37,441 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:16:37,442 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:16:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:16:37,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:16:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:16:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:16:37,443 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-10-14 23:16:37,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:37,446 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:16:37,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:16:37,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:16:37,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:16:37,650 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:37,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:16:37,792 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:16:37,793 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:16:37,793 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:16:37,793 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:16:37,793 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:16:37,793 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:16:37,793 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:16:37,794 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 31) no Hoare annotation was computed. [2019-10-14 23:16:37,794 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 26) no Hoare annotation was computed. [2019-10-14 23:16:37,794 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#matriz~0.base|)) (.cse1 (= 1 main_~N_COL~0)) (.cse3 (= 1 main_~N_LIN~0)) (.cse2 (= main_~j~0 1))) (or (and (<= (+ (select .cse0 (+ (* (mod (+ main_~j~0 4294967295) 4294967296) 4) |main_~#matriz~0.offset|)) 1) main_~maior~0) .cse1 .cse2) (and .cse1 (= main_~j~0 0) .cse3) (and (<= (select .cse0 |main_~#matriz~0.offset|) main_~maior~0) (= 1 main_~k~0) .cse1 .cse3 .cse2))) [2019-10-14 23:16:37,794 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 26) no Hoare annotation was computed. [2019-10-14 23:16:37,794 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 31) no Hoare annotation was computed. [2019-10-14 23:16:37,794 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 31) the Hoare annotation is: true [2019-10-14 23:16:37,794 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (and (<= |main_#t~mem6| main_~maior~0) (<= (select (select |#memory_int| |main_~#matriz~0.base|) |main_~#matriz~0.offset|) main_~maior~0)) [2019-10-14 23:16:37,795 INFO L443 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2019-10-14 23:16:37,795 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 25) no Hoare annotation was computed. [2019-10-14 23:16:37,795 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 26) no Hoare annotation was computed. [2019-10-14 23:16:37,795 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 26) the Hoare annotation is: (let ((.cse0 (= 1 main_~N_COL~0)) (.cse2 (= 1 main_~N_LIN~0)) (.cse1 (= main_~j~0 0))) (or (and (= main_~k~0 0) .cse0 .cse1 .cse2) (and (<= (select (select |#memory_int| |main_~#matriz~0.base|) |main_~#matriz~0.offset|) main_~maior~0) (= 1 main_~k~0) .cse0 .cse2 .cse1))) [2019-10-14 23:16:37,795 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-14 23:16:37,795 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:16:37,795 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-14 23:16:37,796 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-14 23:16:37,796 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-14 23:16:37,796 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:16:37,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:16:37,809 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:16:37,811 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:16:37,811 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:16:37,812 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:16:37,812 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:16:37,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:16:37 BoogieIcfgContainer [2019-10-14 23:16:37,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:16:37,816 INFO L168 Benchmark]: Toolchain (without parser) took 6418.95 ms. Allocated memory was 145.8 MB in the beginning and 245.9 MB in the end (delta: 100.1 MB). Free memory was 103.1 MB in the beginning and 172.6 MB in the end (delta: -69.5 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:37,817 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-14 23:16:37,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.11 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 180.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:37,819 INFO L168 Benchmark]: Boogie Preprocessor took 33.26 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 179.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:37,819 INFO L168 Benchmark]: RCFGBuilder took 342.67 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 164.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:37,820 INFO L168 Benchmark]: TraceAbstraction took 5658.20 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 163.7 MB in the beginning and 172.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:37,824 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.11 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 180.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.26 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 179.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 342.67 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 164.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5658.20 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 163.7 MB in the beginning and 172.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant [2019-10-14 23:16:37,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:16:37,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((k == 0 && 1 == N_COL) && j == 0) && 1 == N_LIN) || ((((unknown-#memory_int-unknown[matriz][matriz] <= maior && 1 == k) && 1 == N_COL) && 1 == N_LIN) && j == 0) - InvariantResult [Line: 19]: Loop Invariant [2019-10-14 23:16:37,834 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:16:37,834 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:16:37,835 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:16:37,835 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((unknown-#memory_int-unknown[matriz][(j + 4294967295) % 4294967296 * 4 + matriz] + 1 <= maior && 1 == N_COL) && j == 1) || ((1 == N_COL && j == 0) && 1 == N_LIN)) || ((((unknown-#memory_int-unknown[matriz][matriz] <= maior && 1 == k) && 1 == N_COL) && 1 == N_LIN) && j == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 5.5s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 110 SDtfs, 62 SDslu, 254 SDs, 0 SdLazy, 319 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 25 NumberOfFragments, 105 HoareAnnotationTreeSize, 16 FomulaSimplifications, 98 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 58 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 144 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 136 ConstructedInterpolants, 5 QuantifiedInterpolants, 17837 SizeOfPredicates, 41 NumberOfNonLiveVariables, 582 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 18/35 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...