/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:26:20,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:26:20,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:26:20,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:26:20,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:26:20,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:26:20,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:26:20,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:26:20,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:26:20,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:26:20,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:26:20,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:26:20,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:26:20,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:26:20,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:26:20,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:26:20,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:26:20,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:26:20,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:26:20,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:26:20,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:26:20,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:26:20,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:26:20,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:26:20,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:26:20,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:26:20,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:26:20,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:26:20,217 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 [2019-11-06 21:26:20,231 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:26:20,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:26:20,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:26:20,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:26:20,232 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:26:20,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:26:20,233 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:26:20,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:26:20,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:26:20,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:26:20,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:26:20,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:26:20,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:26:20,234 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:26:20,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:26:20,235 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:26:20,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:26:20,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:26:20,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:26:20,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:26:20,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:26:20,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:26:20,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:26:20,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:26:20,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:26:20,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:26:20,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:26:20,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:26:20,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:26:20,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:26:20,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:26:20,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:26:20,521 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:26:20,522 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:26:20,523 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2019-11-06 21:26:20,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a4fbf11c/55b7baa9b78e4a80b732b620bb01efe4/FLAGd4269b364 [2019-11-06 21:26:21,076 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:26:21,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3.c [2019-11-06 21:26:21,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a4fbf11c/55b7baa9b78e4a80b732b620bb01efe4/FLAGd4269b364 [2019-11-06 21:26:21,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a4fbf11c/55b7baa9b78e4a80b732b620bb01efe4 [2019-11-06 21:26:21,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:26:21,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:26:21,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:26:21,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:26:21,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:26:21,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:26:21" (1/1) ... [2019-11-06 21:26:21,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44932c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21, skipping insertion in model container [2019-11-06 21:26:21,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:26:21" (1/1) ... [2019-11-06 21:26:21,483 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:26:21,503 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:26:21,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:26:21,718 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:26:21,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:26:21,751 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:26:21,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21 WrapperNode [2019-11-06 21:26:21,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:26:21,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:26:21,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:26:21,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:26:21,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21" (1/1) ... [2019-11-06 21:26:21,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21" (1/1) ... [2019-11-06 21:26:21,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21" (1/1) ... [2019-11-06 21:26:21,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21" (1/1) ... [2019-11-06 21:26:21,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21" (1/1) ... [2019-11-06 21:26:21,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21" (1/1) ... [2019-11-06 21:26:21,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21" (1/1) ... [2019-11-06 21:26:21,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:26:21,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:26:21,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:26:21,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:26:21,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21" (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 [2019-11-06 21:26:21,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:26:21,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:26:21,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:26:21,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:26:21,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:26:21,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:26:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:26:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:26:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:26:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:26:21,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:26:22,099 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:26:22,100 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 21:26:22,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:26:22 BoogieIcfgContainer [2019-11-06 21:26:22,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:26:22,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:26:22,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:26:22,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:26:22,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:26:21" (1/3) ... [2019-11-06 21:26:22,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e80cea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:26:22, skipping insertion in model container [2019-11-06 21:26:22,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:21" (2/3) ... [2019-11-06 21:26:22,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e80cea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:26:22, skipping insertion in model container [2019-11-06 21:26:22,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:26:22" (3/3) ... [2019-11-06 21:26:22,113 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2019-11-06 21:26:22,124 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:26:22,145 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:26:22,154 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:26:22,179 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:26:22,179 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:26:22,179 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:26:22,179 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:26:22,179 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:26:22,180 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:26:22,180 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:26:22,180 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:26:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-06 21:26:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 21:26:22,201 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:22,202 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:22,204 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:22,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:22,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-11-06 21:26:22,218 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:22,219 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558039845] [2019-11-06 21:26:22,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:26:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:26:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:26:22,327 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558039845] [2019-11-06 21:26:22,327 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:26:22,328 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:26:22,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901951688] [2019-11-06 21:26:22,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:26:22,333 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:26:22,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:26:22,346 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-06 21:26:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:22,369 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-11-06 21:26:22,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:26:22,371 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-06 21:26:22,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:22,381 INFO L225 Difference]: With dead ends: 35 [2019-11-06 21:26:22,381 INFO L226 Difference]: Without dead ends: 15 [2019-11-06 21:26:22,384 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:26:22,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-06 21:26:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-06 21:26:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-06 21:26:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-06 21:26:22,424 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-11-06 21:26:22,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:22,425 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-06 21:26:22,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:26:22,425 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-06 21:26:22,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 21:26:22,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:22,426 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:22,426 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:22,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:22,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-11-06 21:26:22,427 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:22,428 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392870232] [2019-11-06 21:26:22,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:22,436 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:26:22,437 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729656759] [2019-11-06 21:26:22,437 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 [2019-11-06 21:26:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:26:22,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-06 21:26:22,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:26:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:26:22,630 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392870232] [2019-11-06 21:26:22,631 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:26:22,631 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729656759] [2019-11-06 21:26:22,631 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:26:22,631 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:26:22,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292774920] [2019-11-06 21:26:22,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:26:22,635 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:22,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:26:22,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:26:22,638 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-11-06 21:26:22,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:22,705 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-11-06 21:26:22,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:26:22,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-06 21:26:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:22,708 INFO L225 Difference]: With dead ends: 25 [2019-11-06 21:26:22,708 INFO L226 Difference]: Without dead ends: 22 [2019-11-06 21:26:22,709 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:26:22,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-06 21:26:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-06 21:26:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-06 21:26:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-11-06 21:26:22,717 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2019-11-06 21:26:22,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:22,717 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-11-06 21:26:22,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:26:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-11-06 21:26:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-06 21:26:22,719 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:22,719 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:22,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:22,924 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:22,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:22,925 INFO L82 PathProgramCache]: Analyzing trace with hash 241116926, now seen corresponding path program 1 times [2019-11-06 21:26:22,925 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:22,926 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098921588] [2019-11-06 21:26:22,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:22,933 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:26:22,933 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633629321] [2019-11-06 21:26:22,934 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 [2019-11-06 21:26:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:26:22,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-06 21:26:22,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:26:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:26:23,070 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098921588] [2019-11-06 21:26:23,070 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:26:23,070 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633629321] [2019-11-06 21:26:23,071 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:26:23,071 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-06 21:26:23,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63591642] [2019-11-06 21:26:23,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:26:23,072 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:23,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:26:23,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:26:23,073 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2019-11-06 21:26:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:23,232 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-11-06 21:26:23,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:26:23,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-11-06 21:26:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:23,234 INFO L225 Difference]: With dead ends: 32 [2019-11-06 21:26:23,235 INFO L226 Difference]: Without dead ends: 29 [2019-11-06 21:26:23,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:26:23,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-06 21:26:23,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-06 21:26:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-06 21:26:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-11-06 21:26:23,249 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2019-11-06 21:26:23,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:23,250 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-11-06 21:26:23,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:26:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-11-06 21:26:23,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 21:26:23,252 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:23,252 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:23,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:23,462 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:23,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:23,462 INFO L82 PathProgramCache]: Analyzing trace with hash 311210265, now seen corresponding path program 2 times [2019-11-06 21:26:23,462 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:23,463 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94519069] [2019-11-06 21:26:23,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:23,475 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:26:23,475 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339664453] [2019-11-06 21:26:23,475 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 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 [2019-11-06 21:26:23,525 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 21:26:23,525 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:26:23,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-06 21:26:23,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:26:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 21:26:23,691 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94519069] [2019-11-06 21:26:23,692 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:26:23,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339664453] [2019-11-06 21:26:23,695 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:26:23,695 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-06 21:26:23,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159369891] [2019-11-06 21:26:23,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:26:23,696 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:23,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:26:23,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:26:23,697 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 9 states. [2019-11-06 21:26:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:23,867 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-11-06 21:26:23,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:26:23,867 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-11-06 21:26:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:23,869 INFO L225 Difference]: With dead ends: 39 [2019-11-06 21:26:23,869 INFO L226 Difference]: Without dead ends: 36 [2019-11-06 21:26:23,869 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:26:23,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-06 21:26:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-06 21:26:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-06 21:26:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-11-06 21:26:23,877 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2019-11-06 21:26:23,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:23,878 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2019-11-06 21:26:23,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:26:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2019-11-06 21:26:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 21:26:23,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:23,879 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:24,083 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:24,083 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:24,084 INFO L82 PathProgramCache]: Analyzing trace with hash -928013666, now seen corresponding path program 3 times [2019-11-06 21:26:24,084 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:24,085 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013077773] [2019-11-06 21:26:24,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:24,091 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:26:24,092 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053082079] [2019-11-06 21:26:24,092 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 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 [2019-11-06 21:26:24,129 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-06 21:26:24,130 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:26:24,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-06 21:26:24,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:26:25,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:26:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-06 21:26:25,203 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013077773] [2019-11-06 21:26:25,203 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:26:25,204 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053082079] [2019-11-06 21:26:25,204 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:26:25,204 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-06 21:26:25,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484770183] [2019-11-06 21:26:25,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:26:25,205 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:25,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:26:25,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:26:25,206 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2019-11-06 21:26:25,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:25,291 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2019-11-06 21:26:25,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:26:25,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2019-11-06 21:26:25,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:25,292 INFO L225 Difference]: With dead ends: 36 [2019-11-06 21:26:25,292 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:26:25,293 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:26:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:26:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:26:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:26:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:26:25,294 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-11-06 21:26:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:25,294 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:26:25,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:26:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:26:25,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:26:25,498 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:25,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:26:25,994 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2019-11-06 21:26:40,128 WARN L191 SmtUtils]: Spent 14.13 s on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-11-06 21:26:42,486 WARN L191 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2019-11-06 21:26:42,489 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-06 21:26:42,489 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:26:42,489 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:26:42,489 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:26:42,489 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:26:42,489 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:26:42,489 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 16 39) the Hoare annotation is: true [2019-11-06 21:26:42,490 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (or (and (= main_~y~0 1) (= main_~a~0 main_~x~0)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_14 Int)) (and (= main_~x~0 (+ main_~a~0 (* v_main_~x~0_14 main_~z~0))) (= main_~y~0 (* v_main_~y~0_13 main_~z~0)) (= (+ (* (* main_~a~0 main_~z~0) v_main_~y~0_13) v_main_~x~0_14) (+ (* main_~z~0 v_main_~x~0_14) main_~a~0))))) [2019-11-06 21:26:42,490 INFO L443 ceAbstractionStarter]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2019-11-06 21:26:42,490 INFO L439 ceAbstractionStarter]: At program point L27-2(lines 27 36) the Hoare annotation is: (or (and (= main_~y~0 1) (= main_~a~0 main_~x~0)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_14 Int)) (and (= main_~x~0 (+ main_~a~0 (* v_main_~x~0_14 main_~z~0))) (= main_~y~0 (* v_main_~y~0_13 main_~z~0)) (= (+ (* (* main_~a~0 main_~z~0) v_main_~y~0_13) v_main_~x~0_14) (+ (* main_~z~0 v_main_~x~0_14) main_~a~0))))) [2019-11-06 21:26:42,490 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 39) no Hoare annotation was computed. [2019-11-06 21:26:42,490 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (and (= main_~y~0 1) (= main_~a~0 main_~x~0)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_14 Int)) (and (= main_~x~0 (+ main_~a~0 (* v_main_~x~0_14 main_~z~0))) (= main_~y~0 (* v_main_~y~0_13 main_~z~0)) (= (+ (* (* main_~a~0 main_~z~0) v_main_~y~0_13) v_main_~x~0_14) (+ (* main_~z~0 v_main_~x~0_14) main_~a~0)))) (and (= main_~x~0 (+ (* (+ main_~a~0 (* main_~a~0 main_~z~0)) main_~z~0) main_~a~0)) (= main_~y~0 (* main_~z~0 main_~z~0)))) [2019-11-06 21:26:42,491 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 16 39) no Hoare annotation was computed. [2019-11-06 21:26:42,491 INFO L443 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2019-11-06 21:26:42,491 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-11-06 21:26:42,491 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-11-06 21:26:42,491 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-11-06 21:26:42,491 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-11-06 21:26:42,491 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2019-11-06 21:26:42,492 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-06 21:26:42,498 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,499 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-11-06 21:26:42,499 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-11-06 21:26:42,500 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,500 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,506 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,507 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-11-06 21:26:42,507 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-11-06 21:26:42,507 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,507 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:26:42 BoogieIcfgContainer [2019-11-06 21:26:42,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:26:42,512 INFO L168 Benchmark]: Toolchain (without parser) took 21045.79 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 102.5 MB in the beginning and 149.2 MB in the end (delta: -46.7 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:26:42,513 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:26:42,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.81 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 92.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-11-06 21:26:42,515 INFO L168 Benchmark]: Boogie Preprocessor took 107.39 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 180.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:26:42,516 INFO L168 Benchmark]: RCFGBuilder took 241.36 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 168.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:26:42,517 INFO L168 Benchmark]: TraceAbstraction took 20408.01 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 168.2 MB in the beginning and 149.2 MB in the end (delta: 19.0 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2019-11-06 21:26:42,521 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.81 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 92.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.39 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 180.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 241.36 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 168.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20408.01 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 168.2 MB in the beginning and 149.2 MB in the end (delta: 19.0 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 27]: Loop Invariant [2019-11-06 21:26:42,532 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,532 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-11-06 21:26:42,532 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-11-06 21:26:42,533 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,533 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,533 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,534 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-11-06 21:26:42,534 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-11-06 21:26:42,534 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-11-06 21:26:42,534 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] Derived loop invariant: (y == 1 && a == x) || (\exists v_main_~y~0_13 : int, v_main_~x~0_14 : int :: (x == a + v_main_~x~0_14 * z && y == v_main_~y~0_13 * z) && a * z * v_main_~y~0_13 + v_main_~x~0_14 == z * v_main_~x~0_14 + a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 20.3s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 16.9s, HoareTripleCheckerStatistics: 74 SDtfs, 41 SDslu, 217 SDs, 0 SdLazy, 173 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 29 NumberOfFragments, 127 HoareAnnotationTreeSize, 17 FomulaSimplifications, 164 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 37 FormulaSimplificationTreeSizeReductionInter, 16.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 92 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 2 QuantifiedInterpolants, 7371 SizeOfPredicates, 12 NumberOfNonLiveVariables, 220 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 39/52 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...