/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-benchs/drift_tenth.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:41:24,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:41:24,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:41:24,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:41:24,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:41:24,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:41:24,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:41:24,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:41:24,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:41:24,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:41:24,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:41:24,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:41:24,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:41:24,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:41:24,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:41:24,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:41:24,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:41:24,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:41:24,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:41:24,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:41:24,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:41:24,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:41:24,265 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:41:24,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:41:24,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:41:24,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:41:24,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:41:24,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:41:24,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:41:24,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:41:24,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:41:24,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:41:24,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:41:24,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:41:24,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:41:24,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:41:24,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:41:24,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:41:24,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:41:24,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:41:24,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:41:24,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:41:24,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:41:24,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:41:24,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:41:24,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:41:24,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:41:24,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:41:24,736 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:41:24,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/drift_tenth.c [2020-12-22 03:41:24,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57b984b1/3b2934221d1b4f9f8296533841c3b217/FLAGf839e86a2 [2020-12-22 03:41:25,403 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:41:25,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c [2020-12-22 03:41:25,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57b984b1/3b2934221d1b4f9f8296533841c3b217/FLAGf839e86a2 [2020-12-22 03:41:25,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57b984b1/3b2934221d1b4f9f8296533841c3b217 [2020-12-22 03:41:25,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:41:25,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:41:25,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:41:25,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:41:25,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:41:25,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:41:25" (1/1) ... [2020-12-22 03:41:25,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6587bc16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:25, skipping insertion in model container [2020-12-22 03:41:25,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:41:25" (1/1) ... [2020-12-22 03:41:25,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:41:25,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:41:26,044 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2020-12-22 03:41:26,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:41:26,070 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:41:26,083 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2020-12-22 03:41:26,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:41:26,102 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:41:26,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26 WrapperNode [2020-12-22 03:41:26,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:41:26,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:41:26,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:41:26,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:41:26,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:41:26,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:41:26,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:41:26,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:41:26,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... [2020-12-22 03:41:26,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:41:26,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:41:26,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:41:26,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:41:26,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:41:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:41:26,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:41:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:41:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:41:26,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:41:26,479 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 03:41:26,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:26 BoogieIcfgContainer [2020-12-22 03:41:26,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:41:26,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:41:26,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:41:26,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:41:26,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:41:25" (1/3) ... [2020-12-22 03:41:26,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c565341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:41:26, skipping insertion in model container [2020-12-22 03:41:26,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:26" (2/3) ... [2020-12-22 03:41:26,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c565341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:41:26, skipping insertion in model container [2020-12-22 03:41:26,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:26" (3/3) ... [2020-12-22 03:41:26,490 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2020-12-22 03:41:26,498 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:41:26,503 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:41:26,541 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:41:26,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:41:26,581 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:41:26,595 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:41:26,596 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:41:26,596 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:41:26,596 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:41:26,596 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:41:26,596 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:41:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-22 03:41:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 03:41:26,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:26,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 03:41:26,654 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:26,669 INFO L82 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2020-12-22 03:41:26,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:26,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408054225] [2020-12-22 03:41:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:27,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408054225] [2020-12-22 03:41:27,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:41:27,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:41:27,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167644999] [2020-12-22 03:41:27,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:41:27,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:27,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:41:27,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:41:27,037 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-12-22 03:41:27,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:27,089 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-12-22 03:41:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:41:27,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 03:41:27,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:27,101 INFO L225 Difference]: With dead ends: 22 [2020-12-22 03:41:27,101 INFO L226 Difference]: Without dead ends: 10 [2020-12-22 03:41:27,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:41:27,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-22 03:41:27,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-12-22 03:41:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-22 03:41:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-22 03:41:27,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2020-12-22 03:41:27,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:27,154 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-22 03:41:27,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:41:27,154 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-22 03:41:27,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 03:41:27,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:27,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:27,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:41:27,157 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:27,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:27,163 INFO L82 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2020-12-22 03:41:27,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:27,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438320157] [2020-12-22 03:41:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:27,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438320157] [2020-12-22 03:41:27,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298886623] [2020-12-22 03:41:27,218 INFO L95 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 [2020-12-22 03:41:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:27,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 03:41:27,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:41:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:27,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:41:27,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 03:41:27,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385902995] [2020-12-22 03:41:27,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 03:41:27,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:27,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 03:41:27,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:41:27,350 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2020-12-22 03:41:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:27,369 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-22 03:41:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:41:27,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-22 03:41:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:27,371 INFO L225 Difference]: With dead ends: 16 [2020-12-22 03:41:27,371 INFO L226 Difference]: Without dead ends: 12 [2020-12-22 03:41:27,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:41:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-22 03:41:27,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-12-22 03:41:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-22 03:41:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-22 03:41:27,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-12-22 03:41:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:27,377 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-22 03:41:27,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 03:41:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-22 03:41:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:41:27,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:27,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:27,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 03:41:27,595 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:27,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 2 times [2020-12-22 03:41:27,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:27,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233428657] [2020-12-22 03:41:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:27,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233428657] [2020-12-22 03:41:27,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914737171] [2020-12-22 03:41:27,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-12-22 03:41:27,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 03:41:27,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:41:27,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 03:41:27,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:41:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:27,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:41:27,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 03:41:27,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989187711] [2020-12-22 03:41:27,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 03:41:27,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:27,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 03:41:27,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 03:41:27,765 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2020-12-22 03:41:27,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:27,787 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-22 03:41:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 03:41:27,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 03:41:27,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:27,788 INFO L225 Difference]: With dead ends: 18 [2020-12-22 03:41:27,789 INFO L226 Difference]: Without dead ends: 14 [2020-12-22 03:41:27,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 03:41:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-22 03:41:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-12-22 03:41:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-22 03:41:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-22 03:41:27,793 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-12-22 03:41:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:27,794 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-22 03:41:27,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 03:41:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-22 03:41:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:41:27,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:27,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:28,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:41:28,010 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:28,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:28,012 INFO L82 PathProgramCache]: Analyzing trace with hash 833881267, now seen corresponding path program 3 times [2020-12-22 03:41:28,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:28,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202241963] [2020-12-22 03:41:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:28,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202241963] [2020-12-22 03:41:28,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829602674] [2020-12-22 03:41:28,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-12-22 03:41:28,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 03:41:28,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:41:28,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 03:41:28,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:41:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:28,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:41:28,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 03:41:28,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594333339] [2020-12-22 03:41:28,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 03:41:28,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:28,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 03:41:28,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 03:41:28,183 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2020-12-22 03:41:28,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:28,225 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-12-22 03:41:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 03:41:28,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-22 03:41:28,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:28,226 INFO L225 Difference]: With dead ends: 20 [2020-12-22 03:41:28,226 INFO L226 Difference]: Without dead ends: 16 [2020-12-22 03:41:28,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 03:41:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-22 03:41:28,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-12-22 03:41:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-22 03:41:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-22 03:41:28,231 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-12-22 03:41:28,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:28,232 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-22 03:41:28,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 03:41:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-22 03:41:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 03:41:28,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:28,233 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:28,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:41:28,447 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:28,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 4 times [2020-12-22 03:41:28,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:28,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347074095] [2020-12-22 03:41:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:28,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347074095] [2020-12-22 03:41:28,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319498052] [2020-12-22 03:41:28,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-12-22 03:41:28,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 03:41:28,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:41:28,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 03:41:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:41:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:28,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:41:28,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 03:41:28,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602980857] [2020-12-22 03:41:28,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 03:41:28,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:28,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 03:41:28,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 03:41:28,592 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2020-12-22 03:41:28,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:28,617 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-12-22 03:41:28,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 03:41:28,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-22 03:41:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:28,619 INFO L225 Difference]: With dead ends: 22 [2020-12-22 03:41:28,619 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 03:41:28,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 03:41:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 03:41:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-12-22 03:41:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 03:41:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-22 03:41:28,623 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-12-22 03:41:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:28,624 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-22 03:41:28,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 03:41:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-22 03:41:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 03:41:28,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:28,625 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:28,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:41:28,840 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:28,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:28,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1715425335, now seen corresponding path program 5 times [2020-12-22 03:41:28,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:28,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494128146] [2020-12-22 03:41:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:28,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494128146] [2020-12-22 03:41:28,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843353488] [2020-12-22 03:41:28,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-12-22 03:41:28,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-22 03:41:28,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:41:28,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 03:41:28,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:41:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:29,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:41:29,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 03:41:29,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124538117] [2020-12-22 03:41:29,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 03:41:29,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:29,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 03:41:29,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 03:41:29,036 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2020-12-22 03:41:29,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:29,073 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-22 03:41:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 03:41:29,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-22 03:41:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:29,075 INFO L225 Difference]: With dead ends: 24 [2020-12-22 03:41:29,075 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 03:41:29,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 03:41:29,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 03:41:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-22 03:41:29,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 03:41:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-22 03:41:29,089 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-12-22 03:41:29,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:29,090 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-22 03:41:29,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 03:41:29,091 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-22 03:41:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 03:41:29,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:29,092 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:29,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 03:41:29,293 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:29,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:29,294 INFO L82 PathProgramCache]: Analyzing trace with hash -690462407, now seen corresponding path program 6 times [2020-12-22 03:41:29,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:29,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724670582] [2020-12-22 03:41:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:29,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724670582] [2020-12-22 03:41:29,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923800100] [2020-12-22 03:41:29,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-12-22 03:41:29,420 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-22 03:41:29,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:41:29,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 03:41:29,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:41:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:29,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:41:29,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-22 03:41:29,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708566945] [2020-12-22 03:41:29,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 03:41:29,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:29,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 03:41:29,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 03:41:29,472 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2020-12-22 03:41:29,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:29,519 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-12-22 03:41:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 03:41:29,520 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-12-22 03:41:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:29,521 INFO L225 Difference]: With dead ends: 26 [2020-12-22 03:41:29,521 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 03:41:29,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 03:41:29,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 03:41:29,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-12-22 03:41:29,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 03:41:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-22 03:41:29,526 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-12-22 03:41:29,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:29,526 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-22 03:41:29,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 03:41:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-22 03:41:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 03:41:29,527 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:29,528 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:29,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:41:29,742 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash -2056177221, now seen corresponding path program 7 times [2020-12-22 03:41:29,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:29,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558999633] [2020-12-22 03:41:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:29,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558999633] [2020-12-22 03:41:29,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518975522] [2020-12-22 03:41:29,852 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-12-22 03:41:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:29,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 03:41:29,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:41:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:29,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:41:29,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-22 03:41:29,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704341224] [2020-12-22 03:41:29,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 03:41:29,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:29,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 03:41:29,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 03:41:29,952 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2020-12-22 03:41:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:29,984 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-22 03:41:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 03:41:29,984 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-12-22 03:41:29,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:29,985 INFO L225 Difference]: With dead ends: 28 [2020-12-22 03:41:29,985 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 03:41:29,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 03:41:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 03:41:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-12-22 03:41:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 03:41:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-22 03:41:29,990 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-12-22 03:41:29,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:29,990 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-22 03:41:29,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 03:41:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-22 03:41:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 03:41:29,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:29,992 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:30,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:41:30,206 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:30,207 INFO L82 PathProgramCache]: Analyzing trace with hash -248120899, now seen corresponding path program 8 times [2020-12-22 03:41:30,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:30,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133572853] [2020-12-22 03:41:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:30,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133572853] [2020-12-22 03:41:30,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436249100] [2020-12-22 03:41:30,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-12-22 03:41:30,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 03:41:30,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:41:30,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 03:41:30,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:41:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:30,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:41:30,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-22 03:41:30,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062370886] [2020-12-22 03:41:30,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 03:41:30,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:30,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 03:41:30,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 03:41:30,415 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2020-12-22 03:41:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:30,445 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-12-22 03:41:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 03:41:30,446 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-12-22 03:41:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:30,447 INFO L225 Difference]: With dead ends: 30 [2020-12-22 03:41:30,447 INFO L226 Difference]: Without dead ends: 26 [2020-12-22 03:41:30,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 03:41:30,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-22 03:41:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-12-22 03:41:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-22 03:41:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-12-22 03:41:30,452 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-12-22 03:41:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:30,452 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-12-22 03:41:30,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 03:41:30,452 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-12-22 03:41:30,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 03:41:30,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:30,453 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:30,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 03:41:30,668 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:30,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2127216959, now seen corresponding path program 9 times [2020-12-22 03:41:30,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:30,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954537921] [2020-12-22 03:41:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:30,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954537921] [2020-12-22 03:41:30,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744608531] [2020-12-22 03:41:30,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:41:30,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-22 03:41:30,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:41:30,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 03:41:30,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:41:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:30,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:41:30,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-22 03:41:30,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816306660] [2020-12-22 03:41:30,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 03:41:30,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:30,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 03:41:30,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-22 03:41:30,931 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2020-12-22 03:41:30,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:30,985 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-12-22 03:41:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 03:41:30,986 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-12-22 03:41:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:30,989 INFO L225 Difference]: With dead ends: 31 [2020-12-22 03:41:30,989 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 03:41:30,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-22 03:41:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 03:41:30,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-22 03:41:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 03:41:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-12-22 03:41:30,994 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-12-22 03:41:30,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:30,994 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-12-22 03:41:30,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 03:41:30,995 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-12-22 03:41:30,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 03:41:30,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:30,995 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:31,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:41:31,202 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:31,204 INFO L82 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 10 times [2020-12-22 03:41:31,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:31,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612903955] [2020-12-22 03:41:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:41:31,217 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:41:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:41:31,229 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:41:31,249 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:41:31,249 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:41:31,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 03:41:31,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:41:31 BoogieIcfgContainer [2020-12-22 03:41:31,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:41:31,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:41:31,289 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:41:31,290 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:41:31,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:26" (3/4) ... [2020-12-22 03:41:31,294 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:41:31,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:41:31,296 INFO L168 Benchmark]: Toolchain (without parser) took 5485.40 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.6 MB in the beginning and 145.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:31,297 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:41:31,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.37 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 117.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:31,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.89 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:31,299 INFO L168 Benchmark]: Boogie Preprocessor took 23.64 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:31,300 INFO L168 Benchmark]: RCFGBuilder took 308.78 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 103.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:31,301 INFO L168 Benchmark]: TraceAbstraction took 4806.48 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 103.4 MB in the beginning and 146.3 MB in the end (delta: -43.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:41:31,301 INFO L168 Benchmark]: Witness Printer took 4.67 ms. Allocated memory is still 181.4 MB. Free memory was 146.3 MB in the beginning and 145.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:31,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.37 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 117.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.89 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.64 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 308.78 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 103.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4806.48 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 103.4 MB in the beginning and 146.3 MB in the end (delta: -43.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 4.67 ms. Allocated memory is still 181.4 MB. Free memory was 146.3 MB in the beginning and 145.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 15. Possible FailurePath: [L10] float tick = 1.f / 10.f; [L11] float time = 0.f; [L12] int i; [L14] i = 0 [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND FALSE !(i < 10) [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 55 SDslu, 184 SDs, 0 SdLazy, 180 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=10, 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, 10 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 320 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 11465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/570 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...