/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/nla-digbench-scaling/divbin2_valuebound10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:08:38,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:08:38,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:08:38,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:08:38,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:08:38,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:08:38,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:08:38,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:08:38,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:08:38,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:08:38,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:08:38,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:08:38,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:08:38,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:08:38,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:08:38,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:08:38,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:08:38,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:08:38,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:08:38,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:08:38,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:08:38,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:08:38,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:08:38,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:08:38,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:08:38,620 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:08:38,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:08:38,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:08:38,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:08:38,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:08:38,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:08:38,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:08:38,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:08:38,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:08:38,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:08:38,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:08:38,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:08:38,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:08:38,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:08:38,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:08:38,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:08:38,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:08:38,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:08:38,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:08:38,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:08:38,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:08:38,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:08:39,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:08:39,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:08:39,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:08:39,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:08:39,137 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:08:39,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound10.i [2020-12-22 05:08:39,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422dde330/5349cb6d9cb847e08c611f727cb10b1b/FLAGbcbc68160 [2020-12-22 05:08:39,775 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:08:39,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound10.i [2020-12-22 05:08:39,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422dde330/5349cb6d9cb847e08c611f727cb10b1b/FLAGbcbc68160 [2020-12-22 05:08:40,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422dde330/5349cb6d9cb847e08c611f727cb10b1b [2020-12-22 05:08:40,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:08:40,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:08:40,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:08:40,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:08:40,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:08:40,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1048084b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40, skipping insertion in model container [2020-12-22 05:08:40,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:08:40,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:08:40,439 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/nla-digbench-scaling/divbin2_valuebound10.i[951,964] [2020-12-22 05:08:40,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:08:40,484 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:08:40,506 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/nla-digbench-scaling/divbin2_valuebound10.i[951,964] [2020-12-22 05:08:40,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:08:40,551 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:08:40,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40 WrapperNode [2020-12-22 05:08:40,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:08:40,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:08:40,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:08:40,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:08:40,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:08:40,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:08:40,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:08:40,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:08:40,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (1/1) ... [2020-12-22 05:08:40,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:08:40,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:08:40,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:08:40,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:08:40,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (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 05:08:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:08:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:08:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:08:40,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:08:41,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:08:41,194 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-22 05:08:41,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:08:41 BoogieIcfgContainer [2020-12-22 05:08:41,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:08:41,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:08:41,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:08:41,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:08:41,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:08:40" (1/3) ... [2020-12-22 05:08:41,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47dfb456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:08:41, skipping insertion in model container [2020-12-22 05:08:41,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:08:40" (2/3) ... [2020-12-22 05:08:41,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47dfb456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:08:41, skipping insertion in model container [2020-12-22 05:08:41,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:08:41" (3/3) ... [2020-12-22 05:08:41,212 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound10.i [2020-12-22 05:08:41,226 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:08:41,235 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:08:41,266 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:08:41,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:08:41,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:08:41,299 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:08:41,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:08:41,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:08:41,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:08:41,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:08:41,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:08:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-22 05:08:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:08:41,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:41,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:41,332 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:41,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:41,342 INFO L82 PathProgramCache]: Analyzing trace with hash 119520859, now seen corresponding path program 1 times [2020-12-22 05:08:41,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:41,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597277814] [2020-12-22 05:08:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:08:41,620 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 05:08:41,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597277814] [2020-12-22 05:08:41,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:08:41,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:08:41,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054105267] [2020-12-22 05:08:41,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:08:41,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:41,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:08:41,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:08:41,654 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-22 05:08:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:41,679 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2020-12-22 05:08:41,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:08:41,681 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 05:08:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:41,693 INFO L225 Difference]: With dead ends: 37 [2020-12-22 05:08:41,693 INFO L226 Difference]: Without dead ends: 16 [2020-12-22 05:08:41,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:08:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-22 05:08:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-22 05:08:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 05:08:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-22 05:08:41,744 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2020-12-22 05:08:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:41,744 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-22 05:08:41,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:08:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-22 05:08:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 05:08:41,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:41,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:41,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:08:41,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:41,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:41,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1186643548, now seen corresponding path program 1 times [2020-12-22 05:08:41,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:41,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055994733] [2020-12-22 05:08:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:41,817 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:41,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673418106] [2020-12-22 05:08:41,818 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 05:08:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:08:41,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:08:41,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:42,226 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 05:08:42,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055994733] [2020-12-22 05:08:42,228 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:42,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673418106] [2020-12-22 05:08:42,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:08:42,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:08:42,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596954730] [2020-12-22 05:08:42,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:08:42,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:42,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:08:42,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:08:42,246 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-12-22 05:08:42,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:42,580 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-12-22 05:08:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:08:42,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-12-22 05:08:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:42,583 INFO L225 Difference]: With dead ends: 29 [2020-12-22 05:08:42,583 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 05:08:42,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:08:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 05:08:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-12-22 05:08:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 05:08:42,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-12-22 05:08:42,597 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2020-12-22 05:08:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:42,598 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-12-22 05:08:42,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:08:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-12-22 05:08:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:08:42,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:42,600 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:42,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:08:42,815 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:42,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2054849417, now seen corresponding path program 1 times [2020-12-22 05:08:42,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:42,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672471638] [2020-12-22 05:08:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:42,853 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:42,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89655029] [2020-12-22 05:08:42,854 INFO L95 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 [2020-12-22 05:08:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:08:42,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:08:42,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:43,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672471638] [2020-12-22 05:08:43,039 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:43,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89655029] [2020-12-22 05:08:43,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:43,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:08:43,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993878248] [2020-12-22 05:08:43,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:08:43,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:43,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:08:43,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:08:43,042 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 7 states. [2020-12-22 05:08:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:43,366 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-12-22 05:08:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:08:43,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-22 05:08:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:43,368 INFO L225 Difference]: With dead ends: 34 [2020-12-22 05:08:43,368 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:08:43,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:08:43,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:08:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-12-22 05:08:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-22 05:08:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-12-22 05:08:43,376 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 11 [2020-12-22 05:08:43,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:43,376 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-12-22 05:08:43,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:08:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-12-22 05:08:43,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:08:43,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:43,377 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:43,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:43,592 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:43,594 INFO L82 PathProgramCache]: Analyzing trace with hash -580289007, now seen corresponding path program 1 times [2020-12-22 05:08:43,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:43,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260643295] [2020-12-22 05:08:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:43,610 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:43,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970796176] [2020-12-22 05:08:43,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:08:43,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:08:43,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:43,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260643295] [2020-12-22 05:08:43,693 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:43,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970796176] [2020-12-22 05:08:43,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:08:43,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:08:43,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447926803] [2020-12-22 05:08:43,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:08:43,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:43,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:08:43,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:08:43,699 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 3 states. [2020-12-22 05:08:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:43,727 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-12-22 05:08:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:08:43,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-22 05:08:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:43,729 INFO L225 Difference]: With dead ends: 35 [2020-12-22 05:08:43,729 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 05:08:43,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 05:08:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 05:08:43,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-22 05:08:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:08:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-22 05:08:43,734 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2020-12-22 05:08:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:43,735 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-22 05:08:43,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:08:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-22 05:08:43,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:08:43,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:43,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:43,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:43,950 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:43,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:43,951 INFO L82 PathProgramCache]: Analyzing trace with hash 505525932, now seen corresponding path program 1 times [2020-12-22 05:08:43,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:43,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698641600] [2020-12-22 05:08:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:43,968 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:43,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219162604] [2020-12-22 05:08:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:08:44,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:08:44,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:44,203 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 05:08:44,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698641600] [2020-12-22 05:08:44,203 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:44,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219162604] [2020-12-22 05:08:44,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:44,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:08:44,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921765851] [2020-12-22 05:08:44,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:08:44,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:44,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:08:44,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:08:44,206 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2020-12-22 05:08:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:44,675 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-12-22 05:08:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:08:44,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-12-22 05:08:44,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:44,677 INFO L225 Difference]: With dead ends: 44 [2020-12-22 05:08:44,677 INFO L226 Difference]: Without dead ends: 38 [2020-12-22 05:08:44,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:08:44,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-22 05:08:44,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-12-22 05:08:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 05:08:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-12-22 05:08:44,685 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 15 [2020-12-22 05:08:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:44,685 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-12-22 05:08:44,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:08:44,685 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-12-22 05:08:44,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:08:44,686 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:44,686 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:44,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:44,900 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:44,901 INFO L82 PathProgramCache]: Analyzing trace with hash 296629383, now seen corresponding path program 2 times [2020-12-22 05:08:44,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:44,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105305227] [2020-12-22 05:08:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:44,928 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:44,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163719227] [2020-12-22 05:08:44,929 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 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 05:08:45,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:08:45,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:45,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:08:45,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:45,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105305227] [2020-12-22 05:08:45,189 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:45,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163719227] [2020-12-22 05:08:45,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:45,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:08:45,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049418417] [2020-12-22 05:08:45,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:08:45,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:45,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:08:45,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:08:45,192 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 10 states. [2020-12-22 05:08:45,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:45,490 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-12-22 05:08:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:08:45,490 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-22 05:08:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:45,491 INFO L225 Difference]: With dead ends: 59 [2020-12-22 05:08:45,491 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 05:08:45,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:08:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 05:08:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2020-12-22 05:08:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:08:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-12-22 05:08:45,499 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 17 [2020-12-22 05:08:45,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:45,499 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-12-22 05:08:45,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:08:45,499 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-12-22 05:08:45,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:08:45,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:45,500 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:45,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:08:45,714 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:45,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:45,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1023135329, now seen corresponding path program 3 times [2020-12-22 05:08:45,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:45,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919455261] [2020-12-22 05:08:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:45,733 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:45,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542183362] [2020-12-22 05:08:45,734 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 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 05:08:45,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:08:45,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:45,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:08:45,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:45,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919455261] [2020-12-22 05:08:45,985 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:45,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542183362] [2020-12-22 05:08:45,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:45,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:08:45,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102616115] [2020-12-22 05:08:45,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:08:45,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:45,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:08:45,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:08:45,987 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2020-12-22 05:08:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:46,060 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-12-22 05:08:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:08:46,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-22 05:08:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:46,061 INFO L225 Difference]: With dead ends: 57 [2020-12-22 05:08:46,062 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 05:08:46,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:08:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 05:08:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-22 05:08:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:08:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-12-22 05:08:46,069 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 19 [2020-12-22 05:08:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:46,069 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-12-22 05:08:46,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:08:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-12-22 05:08:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:08:46,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:46,070 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:46,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:46,285 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:46,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:46,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1410508706, now seen corresponding path program 4 times [2020-12-22 05:08:46,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:46,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472784029] [2020-12-22 05:08:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:46,307 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:46,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289914557] [2020-12-22 05:08:46,308 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 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 05:08:46,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:08:46,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:46,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:08:46,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 05:08:46,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472784029] [2020-12-22 05:08:46,542 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:46,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289914557] [2020-12-22 05:08:46,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:46,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:08:46,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147272802] [2020-12-22 05:08:46,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:08:46,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:46,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:08:46,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:08:46,544 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2020-12-22 05:08:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:46,785 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-12-22 05:08:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:08:46,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-22 05:08:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:46,786 INFO L225 Difference]: With dead ends: 46 [2020-12-22 05:08:46,786 INFO L226 Difference]: Without dead ends: 40 [2020-12-22 05:08:46,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:08:46,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-22 05:08:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-12-22 05:08:46,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 05:08:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-12-22 05:08:46,792 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2020-12-22 05:08:46,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:46,793 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-12-22 05:08:46,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:08:46,793 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-12-22 05:08:46,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:08:46,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:46,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:47,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:47,008 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:47,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:47,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2014308028, now seen corresponding path program 5 times [2020-12-22 05:08:47,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:47,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877972793] [2020-12-22 05:08:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:47,027 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:47,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821105196] [2020-12-22 05:08:47,031 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 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 05:08:47,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-12-22 05:08:47,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:47,286 WARN L261 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-22 05:08:47,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:47,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877972793] [2020-12-22 05:08:47,775 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:47,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821105196] [2020-12-22 05:08:47,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:47,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:08:47,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243241320] [2020-12-22 05:08:47,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:08:47,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:47,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:08:47,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:08:47,778 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 12 states. [2020-12-22 05:08:48,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:48,266 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-12-22 05:08:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:08:48,266 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-12-22 05:08:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:48,267 INFO L225 Difference]: With dead ends: 74 [2020-12-22 05:08:48,267 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 05:08:48,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:08:48,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 05:08:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2020-12-22 05:08:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:08:48,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-12-22 05:08:48,276 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 21 [2020-12-22 05:08:48,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:48,276 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-12-22 05:08:48,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:08:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-12-22 05:08:48,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 05:08:48,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:48,277 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:48,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 05:08:48,484 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:48,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:48,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1048532055, now seen corresponding path program 6 times [2020-12-22 05:08:48,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:48,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20961175] [2020-12-22 05:08:48,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:48,506 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:48,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302910005] [2020-12-22 05:08:48,508 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 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 05:08:48,957 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-22 05:08:48,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:48,960 WARN L261 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-22 05:08:48,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:49,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20961175] [2020-12-22 05:08:49,452 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:49,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302910005] [2020-12-22 05:08:49,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:49,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 05:08:49,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673913865] [2020-12-22 05:08:49,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 05:08:49,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:49,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 05:08:49,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:08:49,454 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 14 states. [2020-12-22 05:08:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:50,025 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2020-12-22 05:08:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:08:50,026 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-12-22 05:08:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:50,027 INFO L225 Difference]: With dead ends: 92 [2020-12-22 05:08:50,027 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 05:08:50,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:08:50,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 05:08:50,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2020-12-22 05:08:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 05:08:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-12-22 05:08:50,037 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 23 [2020-12-22 05:08:50,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:50,038 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-12-22 05:08:50,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 05:08:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-12-22 05:08:50,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:08:50,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:50,039 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:50,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:50,246 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:50,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1791789455, now seen corresponding path program 7 times [2020-12-22 05:08:50,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:50,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407192368] [2020-12-22 05:08:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:50,260 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:50,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131700656] [2020-12-22 05:08:50,261 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:08:50,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 05:08:50,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:50,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407192368] [2020-12-22 05:08:50,647 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:50,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131700656] [2020-12-22 05:08:50,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:50,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:08:50,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291657738] [2020-12-22 05:08:50,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:08:50,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:50,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:08:50,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:08:50,650 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 8 states. [2020-12-22 05:08:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:50,771 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-12-22 05:08:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:08:50,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-22 05:08:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:50,774 INFO L225 Difference]: With dead ends: 72 [2020-12-22 05:08:50,774 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 05:08:50,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:08:50,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 05:08:50,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 05:08:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 05:08:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-22 05:08:50,784 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 25 [2020-12-22 05:08:50,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:50,784 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-22 05:08:50,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:08:50,784 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-22 05:08:50,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:08:50,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:50,785 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:51,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:51,001 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:51,002 INFO L82 PathProgramCache]: Analyzing trace with hash 650757938, now seen corresponding path program 8 times [2020-12-22 05:08:51,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:51,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970663038] [2020-12-22 05:08:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:51,033 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:51,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488794808] [2020-12-22 05:08:51,034 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:51,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:08:51,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:51,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:08:51,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:51,559 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 19 [2020-12-22 05:08:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:51,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970663038] [2020-12-22 05:08:51,646 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:51,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488794808] [2020-12-22 05:08:51,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:51,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:08:51,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335307592] [2020-12-22 05:08:51,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:08:51,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:51,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:08:51,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:08:51,649 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 13 states. [2020-12-22 05:08:52,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:52,736 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-12-22 05:08:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:08:52,737 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-12-22 05:08:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:52,737 INFO L225 Difference]: With dead ends: 98 [2020-12-22 05:08:52,738 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 05:08:52,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-12-22 05:08:52,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 05:08:52,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2020-12-22 05:08:52,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 05:08:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-22 05:08:52,747 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 25 [2020-12-22 05:08:52,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:52,747 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-22 05:08:52,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:08:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-22 05:08:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:08:52,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:52,748 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:52,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:08:52,952 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:52,953 INFO L82 PathProgramCache]: Analyzing trace with hash 650817520, now seen corresponding path program 1 times [2020-12-22 05:08:52,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:52,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330537740] [2020-12-22 05:08:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:52,967 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:52,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785760797] [2020-12-22 05:08:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:08:53,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-22 05:08:53,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:53,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330537740] [2020-12-22 05:08:53,516 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:53,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785760797] [2020-12-22 05:08:53,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:53,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:08:53,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105047680] [2020-12-22 05:08:53,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:08:53,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:53,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:08:53,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:08:53,521 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 12 states. [2020-12-22 05:08:54,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:54,457 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2020-12-22 05:08:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:08:54,458 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-12-22 05:08:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:54,459 INFO L225 Difference]: With dead ends: 84 [2020-12-22 05:08:54,459 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 05:08:54,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2020-12-22 05:08:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 05:08:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 55. [2020-12-22 05:08:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 05:08:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-22 05:08:54,468 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 25 [2020-12-22 05:08:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:54,468 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-22 05:08:54,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:08:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-22 05:08:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:08:54,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:54,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:54,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:08:54,680 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:54,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:54,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1800626548, now seen corresponding path program 9 times [2020-12-22 05:08:54,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:54,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851404919] [2020-12-22 05:08:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:54,695 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:54,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751097081] [2020-12-22 05:08:54,699 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:55,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 05:08:55,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:55,894 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 65 conjunts are in the unsatisfiable core [2020-12-22 05:08:55,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:56,401 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-12-22 05:08:56,638 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-12-22 05:08:57,631 WARN L197 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-12-22 05:08:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:57,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851404919] [2020-12-22 05:08:57,869 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:57,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751097081] [2020-12-22 05:08:57,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:57,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-22 05:08:57,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687742583] [2020-12-22 05:08:57,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 05:08:57,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:57,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 05:08:57,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:08:57,872 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 18 states. [2020-12-22 05:08:59,098 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-12-22 05:08:59,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:59,869 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-12-22 05:08:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 05:08:59,870 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 27 [2020-12-22 05:08:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:59,872 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:08:59,872 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 05:08:59,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 05:08:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 05:08:59,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2020-12-22 05:08:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 05:08:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-12-22 05:08:59,883 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 27 [2020-12-22 05:08:59,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:59,883 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-12-22 05:08:59,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 05:08:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-12-22 05:08:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:08:59,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:59,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:00,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:09:00,088 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:00,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1684994122, now seen corresponding path program 2 times [2020-12-22 05:09:00,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:00,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586702638] [2020-12-22 05:09:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:00,100 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:00,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746792350] [2020-12-22 05:09:00,101 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:00,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:09:00,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:00,368 WARN L261 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-22 05:09:00,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:01,080 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-12-22 05:09:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:01,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586702638] [2020-12-22 05:09:01,220 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:01,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746792350] [2020-12-22 05:09:01,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:01,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:09:01,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916234881] [2020-12-22 05:09:01,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:09:01,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:01,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:09:01,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:09:01,222 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 17 states. [2020-12-22 05:09:02,458 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2020-12-22 05:09:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:02,822 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2020-12-22 05:09:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:09:02,824 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2020-12-22 05:09:02,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:02,825 INFO L225 Difference]: With dead ends: 88 [2020-12-22 05:09:02,825 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 05:09:02,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2020-12-22 05:09:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 05:09:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-12-22 05:09:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 05:09:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-22 05:09:02,836 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 27 [2020-12-22 05:09:02,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:02,836 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-22 05:09:02,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:09:02,836 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-22 05:09:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:09:02,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:02,837 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:03,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:03,041 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:03,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1782482341, now seen corresponding path program 3 times [2020-12-22 05:09:03,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:03,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54109813] [2020-12-22 05:09:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:03,055 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:03,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455544248] [2020-12-22 05:09:03,055 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:14,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-22 05:09:14,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:14,707 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-22 05:09:14,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:15,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54109813] [2020-12-22 05:09:15,362 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:15,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455544248] [2020-12-22 05:09:15,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:15,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 05:09:15,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759853894] [2020-12-22 05:09:15,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 05:09:15,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:15,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 05:09:15,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:09:15,364 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 14 states. [2020-12-22 05:09:17,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:17,048 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2020-12-22 05:09:17,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 05:09:17,049 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2020-12-22 05:09:17,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:17,050 INFO L225 Difference]: With dead ends: 96 [2020-12-22 05:09:17,050 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 05:09:17,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2020-12-22 05:09:17,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 05:09:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2020-12-22 05:09:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 05:09:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-12-22 05:09:17,059 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-12-22 05:09:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:17,059 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-12-22 05:09:17,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 05:09:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-12-22 05:09:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:09:17,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:17,061 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:17,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:09:17,268 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:17,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:17,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1444972891, now seen corresponding path program 4 times [2020-12-22 05:09:17,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:17,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108957709] [2020-12-22 05:09:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:17,285 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:17,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043891906] [2020-12-22 05:09:17,285 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:17,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:09:17,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:17,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 05:09:17,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 05:09:17,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108957709] [2020-12-22 05:09:17,500 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:17,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043891906] [2020-12-22 05:09:17,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:17,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:09:17,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840255263] [2020-12-22 05:09:17,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:09:17,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:17,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:09:17,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:09:17,502 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 8 states. [2020-12-22 05:09:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:17,697 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2020-12-22 05:09:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:09:17,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-22 05:09:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:17,700 INFO L225 Difference]: With dead ends: 89 [2020-12-22 05:09:17,700 INFO L226 Difference]: Without dead ends: 64 [2020-12-22 05:09:17,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:09:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-22 05:09:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2020-12-22 05:09:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 05:09:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-12-22 05:09:17,713 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 29 [2020-12-22 05:09:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:17,714 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-12-22 05:09:17,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:09:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-12-22 05:09:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:09:17,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:17,718 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:17,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:09:17,929 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:17,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:17,930 INFO L82 PathProgramCache]: Analyzing trace with hash 571459137, now seen corresponding path program 10 times [2020-12-22 05:09:17,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:17,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903293773] [2020-12-22 05:09:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:17,942 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:17,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850077043] [2020-12-22 05:09:17,943 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:18,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:09:18,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:18,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:09:18,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:18,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903293773] [2020-12-22 05:09:18,616 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:18,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850077043] [2020-12-22 05:09:18,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:18,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:09:18,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805957115] [2020-12-22 05:09:18,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:09:18,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:18,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:09:18,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:09:18,618 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 13 states. [2020-12-22 05:09:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:19,162 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-12-22 05:09:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:09:19,163 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-12-22 05:09:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:19,163 INFO L225 Difference]: With dead ends: 64 [2020-12-22 05:09:19,163 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:09:19,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-12-22 05:09:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:09:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 05:09:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 05:09:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-22 05:09:19,169 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 31 [2020-12-22 05:09:19,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:19,170 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-22 05:09:19,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:09:19,170 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-22 05:09:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:09:19,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:19,171 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:19,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 05:09:19,372 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:19,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2142664922, now seen corresponding path program 5 times [2020-12-22 05:09:19,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:19,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561529742] [2020-12-22 05:09:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:19,384 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:19,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703763759] [2020-12-22 05:09:19,385 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:12,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-22 05:12:12,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:12,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:12:12,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:13,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561529742] [2020-12-22 05:12:13,151 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:13,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703763759] [2020-12-22 05:12:13,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:13,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 05:12:13,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017944210] [2020-12-22 05:12:13,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 05:12:13,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:13,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 05:12:13,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:12:13,155 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2020-12-22 05:12:14,214 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-12-22 05:12:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:14,475 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-12-22 05:12:14,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:12:14,476 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-12-22 05:12:14,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:14,477 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:12:14,477 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 05:12:14,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-12-22 05:12:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 05:12:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-12-22 05:12:14,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 05:12:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-12-22 05:12:14,484 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 33 [2020-12-22 05:12:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:14,484 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-12-22 05:12:14,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 05:12:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-12-22 05:12:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:12:14,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:14,485 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:14,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:14,686 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:14,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2142724504, now seen corresponding path program 6 times [2020-12-22 05:12:14,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:14,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087120725] [2020-12-22 05:12:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:14,701 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:14,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63400517] [2020-12-22 05:12:14,702 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:16,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-22 05:12:16,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:16,872 WARN L261 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-22 05:12:16,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:18,371 WARN L197 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2020-12-22 05:12:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:18,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087120725] [2020-12-22 05:12:18,612 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:18,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63400517] [2020-12-22 05:12:18,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:18,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:12:18,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768610697] [2020-12-22 05:12:18,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:12:18,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:18,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:12:18,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:12:18,614 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 17 states. [2020-12-22 05:12:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:20,147 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-12-22 05:12:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:12:20,148 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 33 [2020-12-22 05:12:20,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:20,149 INFO L225 Difference]: With dead ends: 52 [2020-12-22 05:12:20,149 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:12:20,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2020-12-22 05:12:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:12:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 05:12:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 05:12:20,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-12-22 05:12:20,156 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 33 [2020-12-22 05:12:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:20,156 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-12-22 05:12:20,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:12:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-12-22 05:12:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:12:20,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:20,157 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:20,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:20,362 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:20,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:20,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1333318296, now seen corresponding path program 7 times [2020-12-22 05:12:20,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:20,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540277550] [2020-12-22 05:12:20,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:20,375 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:20,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265690141] [2020-12-22 05:12:20,376 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:20,760 WARN L261 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-22 05:12:20,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:21,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540277550] [2020-12-22 05:12:21,654 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:21,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265690141] [2020-12-22 05:12:21,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:21,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:12:21,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516984457] [2020-12-22 05:12:21,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:12:21,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:21,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:12:21,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:12:21,656 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 17 states. [2020-12-22 05:12:23,076 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-12-22 05:12:23,611 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-12-22 05:12:23,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:23,965 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-12-22 05:12:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:12:23,966 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 33 [2020-12-22 05:12:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:23,966 INFO L225 Difference]: With dead ends: 44 [2020-12-22 05:12:23,966 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:12:23,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2020-12-22 05:12:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:12:23,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:12:23,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:12:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:12:23,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-12-22 05:12:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:23,969 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:12:23,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:12:23,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:12:23,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:12:24,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 05:12:24,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 05:12:24,566 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 253 [2020-12-22 05:12:25,024 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 05:12:47,466 WARN L197 SmtUtils]: Spent 22.44 s on a formula simplification. DAG size of input: 244 DAG size of output: 173 [2020-12-22 05:12:47,471 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-22 05:12:47,471 INFO L189 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-12-22 05:12:47,472 INFO L185 CegarLoopUtils]: At program point L19-2(line 40) the Hoare annotation is: (let ((.cse22 (* ULTIMATE.start_main_~r~0 4294967295))) (let ((.cse47 (mod (+ ULTIMATE.start_main_~A~0 .cse22) 4294967296)) (.cse19 (mod ULTIMATE.start_main_~A~0 4294967296)) (.cse48 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0))) (let ((.cse24 (* ULTIMATE.start_main_~B~0 4)) (.cse28 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 8))) (.cse1 (mod ULTIMATE.start_main_~r~0 4294967296)) (.cse14 (= ULTIMATE.start_main_~q~0 1)) (.cse16 (= ULTIMATE.start_main_~A~0 .cse48)) (.cse26 (mod .cse48 4294967296)) (.cse29 (<= 8 .cse19)) (.cse30 (= ULTIMATE.start_main_~q~0 2)) (.cse31 (= ULTIMATE.start_main_~b~0 4)) (.cse18 (mod ULTIMATE.start_main_~b~0 4294967296)) (.cse0 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 8))) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (div (mod (div .cse47 2) 4294967296) 2)) (.cse17 (<= .cse19 10)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse32 (* ULTIMATE.start_main_~B~0 8))) (let ((.cse8 (= ULTIMATE.start_main_~b~0 .cse32)) (.cse9 (= ULTIMATE.start_main_~b~0 8)) (.cse20 (let ((.cse35 (= ULTIMATE.start_main_~b~0 2)) (.cse33 (= ULTIMATE.start_main_~b~0 1))) (let ((.cse34 (let ((.cse36 (= ULTIMATE.start_main_~q~0 5)) (.cse41 (= ULTIMATE.start_main_~q~0 4))) (or (and .cse35 .cse36 .cse29 .cse3 .cse28 .cse17 .cse5 (<= .cse18 (mod (+ ULTIMATE.start_main_~A~0 4294967288) 4294967296))) (and (let ((.cse46 (mod (+ ULTIMATE.start_main_~A~0 4294967292) 4294967296))) (let ((.cse40 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 4))) (.cse38 (<= 2 .cse46)) (.cse37 (<= 4 .cse19)) (.cse39 (< .cse19 8)) (.cse44 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 4))) (.cse42 (<= 2 .cse19)) (.cse45 (= ULTIMATE.start_main_~q~0 3)) (.cse43 (< .cse19 4))) (or (and .cse33 (= ULTIMATE.start_main_~q~0 6) .cse3 .cse37 (= (+ ULTIMATE.start_main_~r~0 6) ULTIMATE.start_main_~A~0) .cse38 .cse39) (and .cse35 .cse30 .cse3 .cse37 .cse40 .cse39) (and .cse33 (< .cse1 2) .cse3 .cse40 .cse41) (and .cse33 .cse3 .cse37 (= ULTIMATE.start_main_~q~0 7) .cse38 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 6)) .cse39 (<= .cse18 (mod (+ ULTIMATE.start_main_~A~0 4294967290) 4294967296))) (and .cse33 .cse42 .cse30 .cse3 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 2)) .cse43) (and .cse44 .cse35 .cse3 .cse37 .cse45 (<= .cse18 .cse46) .cse39) (and .cse14 .cse3 .cse16 .cse17 .cse5) (and .cse44 .cse33 .cse36 .cse3 (< .cse26 2)) (and .cse29 .cse0 .cse30 .cse3 .cse31 .cse17) (and .cse33 (<= .cse18 (mod (+ ULTIMATE.start_main_~A~0 4294967294) 4294967296)) .cse42 .cse3 .cse45 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 2)) .cse43)))) .cse5) (and .cse0 .cse3 (= ULTIMATE.start_main_~b~0 .cse6) (<= .cse47 .cse19) .cse17 .cse5 .cse41))))) (or (and .cse33 .cse34) (and .cse35 .cse34))))) (.cse21 (<= .cse1 10)) (.cse7 (< .cse1 .cse18)) (.cse23 (<= .cse18 .cse26)) (.cse4 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0)) (.cse15 (mod .cse32 4294967296)) (.cse13 (= ULTIMATE.start_main_~B~0 1)) (.cse25 (<= (mod ULTIMATE.start_main_~B~0 4294967296) .cse1)) (.cse12 (mod .cse24 4294967296)) (.cse10 (= ULTIMATE.start_main_~q~0 0)) (.cse11 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (let ((.cse2 (mod .cse6 4294967296))) (and (= ULTIMATE.start_main_~q~0 8) .cse0 (< .cse1 .cse2) (= ULTIMATE.start_main_~b~0 (div .cse2 2)) .cse3 .cse4 .cse5)) (and .cse7 .cse3 .cse8 .cse9 .cse10 .cse5 .cse11 (<= .cse12 .cse1)) (and .cse13 .cse14 (= ULTIMATE.start_main_~b~0 (div .cse15 2)) .cse3 .cse16 .cse17 (<= .cse18 .cse19) .cse5 (< .cse19 .cse15)) (and .cse13 .cse20 .cse7) (and (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 10)) .cse3 .cse21 .cse4 (= ULTIMATE.start_main_~b~0 (div (mod (+ ULTIMATE.start_main_~A~0 .cse22 4294967288) 4294967296) 2)) .cse17 (= ULTIMATE.start_main_~q~0 10) .cse5) (and .cse14 .cse3 .cse8 .cse16 .cse9 .cse17 .cse5 .cse23) (and .cse13 .cse3 .cse4 .cse17 .cse10 .cse5 .cse11) (and .cse13 .cse20 .cse21 .cse4) (and .cse13 .cse7 (= ULTIMATE.start_main_~b~0 .cse24) .cse25 .cse3 .cse10 .cse5 .cse11) (let ((.cse27 (mod (div (mod (div (mod (+ ULTIMATE.start_main_~A~0 .cse22 (* ULTIMATE.start_main_~b~0 4294967295)) 4294967296) 2) 4294967296) 2) 4294967296))) (and (< .cse26 .cse27) (= ULTIMATE.start_main_~q~0 9) .cse3 .cse28 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 (div .cse27 2)) .cse23)) (and .cse13 .cse14 .cse3 .cse4 .cse16 .cse17 .cse5) (and .cse13 .cse29 .cse0 .cse30 .cse3 .cse31 .cse17 .cse5) (and (= ULTIMATE.start_main_~b~0 16) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~B~0 16)) .cse3 .cse17 .cse10 .cse5 .cse11 (<= .cse15 .cse1)) (and .cse13 .cse25 .cse3 (< .cse1 .cse12) .cse10 .cse5 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~b~0) .cse11)))))) [2020-12-22 05:12:47,472 INFO L189 CegarLoopUtils]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2020-12-22 05:12:47,472 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-22 05:12:47,472 INFO L192 CegarLoopUtils]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2020-12-22 05:12:47,472 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 05:12:47,473 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 05:12:47,473 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 05:12:47,473 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-22 05:12:47,473 INFO L189 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-12-22 05:12:47,473 INFO L189 CegarLoopUtils]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-12-22 05:12:47,473 INFO L192 CegarLoopUtils]: At program point L49(lines 25 50) the Hoare annotation is: true [2020-12-22 05:12:47,473 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-22 05:12:47,473 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 05:12:47,473 INFO L189 CegarLoopUtils]: For program point L38-1(lines 38 47) no Hoare annotation was computed. [2020-12-22 05:12:47,473 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 37) the Hoare annotation is: (let ((.cse6 (* ULTIMATE.start_main_~B~0 4)) (.cse0 (= ULTIMATE.start_main_~B~0 1)) (.cse5 (* ULTIMATE.start_main_~B~0 8)) (.cse7 (mod ULTIMATE.start_main_~r~0 4294967296)) (.cse1 (<= (mod ULTIMATE.start_main_~A~0 4294967296) 10)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (* ULTIMATE.start_main_~B~0 2)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) .cse1 .cse2 .cse3 .cse4) (and (= ULTIMATE.start_main_~b~0 .cse5) (= ULTIMATE.start_main_~b~0 8) .cse1 .cse2 .cse3 (<= (mod .cse6 4294967296) .cse7) .cse4) (and (= ULTIMATE.start_main_~b~0 .cse6) (= ULTIMATE.start_main_~b~0 4) .cse1 .cse2 (<= (mod .cse8 4294967296) .cse7) .cse3 .cse4) (and .cse0 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~B~0 16)) .cse1 .cse2 .cse3 .cse4 (<= (mod .cse5 4294967296) .cse7)) (and (= ULTIMATE.start_main_~b~0 2) (<= (mod ULTIMATE.start_main_~B~0 4294967296) .cse7) .cse1 .cse2 .cse3 (= .cse8 ULTIMATE.start_main_~b~0) .cse4))) [2020-12-22 05:12:47,474 INFO L189 CegarLoopUtils]: For program point L43(lines 43 46) no Hoare annotation was computed. [2020-12-22 05:12:47,474 INFO L189 CegarLoopUtils]: For program point L43-2(lines 25 50) no Hoare annotation was computed. [2020-12-22 05:12:47,474 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-22 05:12:47,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:12:47 BoogieIcfgContainer [2020-12-22 05:12:47,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:12:47,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:12:47,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:12:47,524 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:12:47,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:08:41" (3/4) ... [2020-12-22 05:12:47,532 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 05:12:47,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 05:12:47,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 05:12:47,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:12:47,557 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:12:47,612 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/divbin2_valuebound10.i-witness.graphml [2020-12-22 05:12:47,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:12:47,613 INFO L168 Benchmark]: Toolchain (without parser) took 247470.52 ms. Allocated memory was 162.5 MB in the beginning and 237.0 MB in the end (delta: 74.4 MB). Free memory was 142.6 MB in the beginning and 178.7 MB in the end (delta: -36.1 MB). Peak memory consumption was 38.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:47,613 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 162.5 MB. Free memory is still 133.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:12:47,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.58 ms. Allocated memory is still 162.5 MB. Free memory was 142.6 MB in the beginning and 132.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:47,614 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.05 ms. Allocated memory is still 162.5 MB. Free memory was 132.7 MB in the beginning and 131.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:47,615 INFO L168 Benchmark]: Boogie Preprocessor took 50.02 ms. Allocated memory is still 162.5 MB. Free memory was 131.4 MB in the beginning and 130.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:47,615 INFO L168 Benchmark]: RCFGBuilder took 533.89 ms. Allocated memory is still 162.5 MB. Free memory was 130.0 MB in the beginning and 133.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:47,616 INFO L168 Benchmark]: TraceAbstraction took 246325.34 ms. Allocated memory was 162.5 MB in the beginning and 237.0 MB in the end (delta: 74.4 MB). Free memory was 132.8 MB in the beginning and 182.9 MB in the end (delta: -50.1 MB). Peak memory consumption was 132.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:47,616 INFO L168 Benchmark]: Witness Printer took 87.80 ms. Allocated memory is still 237.0 MB. Free memory was 182.9 MB in the beginning and 178.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:12:47,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 162.5 MB. Free memory is still 133.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 408.58 ms. Allocated memory is still 162.5 MB. Free memory was 142.6 MB in the beginning and 132.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.05 ms. Allocated memory is still 162.5 MB. Free memory was 132.7 MB in the beginning and 131.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.02 ms. Allocated memory is still 162.5 MB. Free memory was 131.4 MB in the beginning and 130.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 533.89 ms. Allocated memory is still 162.5 MB. Free memory was 130.0 MB in the beginning and 133.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 246325.34 ms. Allocated memory was 162.5 MB in the beginning and 237.0 MB in the end (delta: 74.4 MB). Free memory was 132.8 MB in the beginning and 182.9 MB in the end (delta: -50.1 MB). Peak memory consumption was 132.9 MB. Max. memory is 8.0 GB. * Witness Printer took 87.80 ms. Allocated memory is still 237.0 MB. Free memory was 182.9 MB in the beginning and 178.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((B == 1 && B == b) && A % 4294967296 <= 10) && q == 0) && cond == 1) && A == r) || ((((((b == B * 8 && b == 8) && A % 4294967296 <= 10) && q == 0) && cond == 1) && B * 4 % 4294967296 <= r % 4294967296) && A == r)) || ((((((b == B * 4 && b == 4) && A % 4294967296 <= 10) && q == 0) && B * 2 % 4294967296 <= r % 4294967296) && cond == 1) && A == r)) || ((((((B == 1 && b == B * 16) && A % 4294967296 <= 10) && q == 0) && cond == 1) && A == r) && B * 8 % 4294967296 <= r % 4294967296)) || ((((((b == 2 && B % 4294967296 <= r % 4294967296) && A % 4294967296 <= 10) && q == 0) && cond == 1) && B * 2 == b) && A == r) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((((((((q == 8 && A == r + 8) && r % 4294967296 < (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2 % 4294967296) && b == (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2 % 4294967296 / 2) && 1 == cond) && B == b) && cond == 1) || (((((((r % 4294967296 < b % 4294967296 && 1 == cond) && b == B * 8) && b == 8) && q == 0) && cond == 1) && A == r) && B * 4 % 4294967296 <= r % 4294967296)) || ((((((((B == 1 && q == 1) && b == B * 8 % 4294967296 / 2) && 1 == cond) && A == r + b) && A % 4294967296 <= 10) && b % 4294967296 <= A % 4294967296) && cond == 1) && A % 4294967296 < B * 8 % 4294967296)) || ((B == 1 && ((b == 1 && (((((((((b == 2 && q == 5) && 8 <= A % 4294967296) && 1 == cond) && A == r + b + 8) && A % 4294967296 <= 10) && cond == 1) && b % 4294967296 <= (A + 4294967288) % 4294967296) || ((((((((((((((((b == 1 && q == 6) && 1 == cond) && 4 <= A % 4294967296) && r + 6 == A) && 2 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8) || (((((b == 2 && q == 2) && 1 == cond) && 4 <= A % 4294967296) && A == r + 4) && A % 4294967296 < 8)) || ((((b == 1 && r % 4294967296 < 2) && 1 == cond) && A == r + 4) && q == 4)) || (((((((b == 1 && 1 == cond) && 4 <= A % 4294967296) && q == 7) && 2 <= (A + 4294967292) % 4294967296) && A == r + b + 6) && A % 4294967296 < 8) && b % 4294967296 <= (A + 4294967290) % 4294967296)) || (((((b == 1 && 2 <= A % 4294967296) && q == 2) && 1 == cond) && A == r + 2) && A % 4294967296 < 4)) || ((((((A == r + b + 4 && b == 2) && 1 == cond) && 4 <= A % 4294967296) && q == 3) && b % 4294967296 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8)) || ((((q == 1 && 1 == cond) && A == r + b) && A % 4294967296 <= 10) && cond == 1)) || ((((A == r + b + 4 && b == 1) && q == 5) && 1 == cond) && (r + b) % 4294967296 < 2)) || (((((8 <= A % 4294967296 && A == r + 8) && q == 2) && 1 == cond) && b == 4) && A % 4294967296 <= 10)) || ((((((b == 1 && b % 4294967296 <= (A + 4294967294) % 4294967296) && 2 <= A % 4294967296) && 1 == cond) && q == 3) && A == r + b + 2) && A % 4294967296 < 4)) && cond == 1)) || ((((((A == r + 8 && 1 == cond) && b == (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2) && (A + r * 4294967295) % 4294967296 <= A % 4294967296) && A % 4294967296 <= 10) && cond == 1) && q == 4))) || (b == 2 && (((((((((b == 2 && q == 5) && 8 <= A % 4294967296) && 1 == cond) && A == r + b + 8) && A % 4294967296 <= 10) && cond == 1) && b % 4294967296 <= (A + 4294967288) % 4294967296) || ((((((((((((((((b == 1 && q == 6) && 1 == cond) && 4 <= A % 4294967296) && r + 6 == A) && 2 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8) || (((((b == 2 && q == 2) && 1 == cond) && 4 <= A % 4294967296) && A == r + 4) && A % 4294967296 < 8)) || ((((b == 1 && r % 4294967296 < 2) && 1 == cond) && A == r + 4) && q == 4)) || (((((((b == 1 && 1 == cond) && 4 <= A % 4294967296) && q == 7) && 2 <= (A + 4294967292) % 4294967296) && A == r + b + 6) && A % 4294967296 < 8) && b % 4294967296 <= (A + 4294967290) % 4294967296)) || (((((b == 1 && 2 <= A % 4294967296) && q == 2) && 1 == cond) && A == r + 2) && A % 4294967296 < 4)) || ((((((A == r + b + 4 && b == 2) && 1 == cond) && 4 <= A % 4294967296) && q == 3) && b % 4294967296 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8)) || ((((q == 1 && 1 == cond) && A == r + b) && A % 4294967296 <= 10) && cond == 1)) || ((((A == r + b + 4 && b == 1) && q == 5) && 1 == cond) && (r + b) % 4294967296 < 2)) || (((((8 <= A % 4294967296 && A == r + 8) && q == 2) && 1 == cond) && b == 4) && A % 4294967296 <= 10)) || ((((((b == 1 && b % 4294967296 <= (A + 4294967294) % 4294967296) && 2 <= A % 4294967296) && 1 == cond) && q == 3) && A == r + b + 2) && A % 4294967296 < 4)) && cond == 1)) || ((((((A == r + 8 && 1 == cond) && b == (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2) && (A + r * 4294967295) % 4294967296 <= A % 4294967296) && A % 4294967296 <= 10) && cond == 1) && q == 4))))) && r % 4294967296 < b % 4294967296)) || (((((((A == r + 10 && 1 == cond) && r % 4294967296 <= 10) && B == b) && b == (A + r * 4294967295 + 4294967288) % 4294967296 / 2) && A % 4294967296 <= 10) && q == 10) && cond == 1)) || (((((((q == 1 && 1 == cond) && b == B * 8) && A == r + b) && b == 8) && A % 4294967296 <= 10) && cond == 1) && b % 4294967296 <= (r + b) % 4294967296)) || ((((((B == 1 && 1 == cond) && B == b) && A % 4294967296 <= 10) && q == 0) && cond == 1) && A == r)) || (((B == 1 && ((b == 1 && (((((((((b == 2 && q == 5) && 8 <= A % 4294967296) && 1 == cond) && A == r + b + 8) && A % 4294967296 <= 10) && cond == 1) && b % 4294967296 <= (A + 4294967288) % 4294967296) || ((((((((((((((((b == 1 && q == 6) && 1 == cond) && 4 <= A % 4294967296) && r + 6 == A) && 2 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8) || (((((b == 2 && q == 2) && 1 == cond) && 4 <= A % 4294967296) && A == r + 4) && A % 4294967296 < 8)) || ((((b == 1 && r % 4294967296 < 2) && 1 == cond) && A == r + 4) && q == 4)) || (((((((b == 1 && 1 == cond) && 4 <= A % 4294967296) && q == 7) && 2 <= (A + 4294967292) % 4294967296) && A == r + b + 6) && A % 4294967296 < 8) && b % 4294967296 <= (A + 4294967290) % 4294967296)) || (((((b == 1 && 2 <= A % 4294967296) && q == 2) && 1 == cond) && A == r + 2) && A % 4294967296 < 4)) || ((((((A == r + b + 4 && b == 2) && 1 == cond) && 4 <= A % 4294967296) && q == 3) && b % 4294967296 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8)) || ((((q == 1 && 1 == cond) && A == r + b) && A % 4294967296 <= 10) && cond == 1)) || ((((A == r + b + 4 && b == 1) && q == 5) && 1 == cond) && (r + b) % 4294967296 < 2)) || (((((8 <= A % 4294967296 && A == r + 8) && q == 2) && 1 == cond) && b == 4) && A % 4294967296 <= 10)) || ((((((b == 1 && b % 4294967296 <= (A + 4294967294) % 4294967296) && 2 <= A % 4294967296) && 1 == cond) && q == 3) && A == r + b + 2) && A % 4294967296 < 4)) && cond == 1)) || ((((((A == r + 8 && 1 == cond) && b == (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2) && (A + r * 4294967295) % 4294967296 <= A % 4294967296) && A % 4294967296 <= 10) && cond == 1) && q == 4))) || (b == 2 && (((((((((b == 2 && q == 5) && 8 <= A % 4294967296) && 1 == cond) && A == r + b + 8) && A % 4294967296 <= 10) && cond == 1) && b % 4294967296 <= (A + 4294967288) % 4294967296) || ((((((((((((((((b == 1 && q == 6) && 1 == cond) && 4 <= A % 4294967296) && r + 6 == A) && 2 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8) || (((((b == 2 && q == 2) && 1 == cond) && 4 <= A % 4294967296) && A == r + 4) && A % 4294967296 < 8)) || ((((b == 1 && r % 4294967296 < 2) && 1 == cond) && A == r + 4) && q == 4)) || (((((((b == 1 && 1 == cond) && 4 <= A % 4294967296) && q == 7) && 2 <= (A + 4294967292) % 4294967296) && A == r + b + 6) && A % 4294967296 < 8) && b % 4294967296 <= (A + 4294967290) % 4294967296)) || (((((b == 1 && 2 <= A % 4294967296) && q == 2) && 1 == cond) && A == r + 2) && A % 4294967296 < 4)) || ((((((A == r + b + 4 && b == 2) && 1 == cond) && 4 <= A % 4294967296) && q == 3) && b % 4294967296 <= (A + 4294967292) % 4294967296) && A % 4294967296 < 8)) || ((((q == 1 && 1 == cond) && A == r + b) && A % 4294967296 <= 10) && cond == 1)) || ((((A == r + b + 4 && b == 1) && q == 5) && 1 == cond) && (r + b) % 4294967296 < 2)) || (((((8 <= A % 4294967296 && A == r + 8) && q == 2) && 1 == cond) && b == 4) && A % 4294967296 <= 10)) || ((((((b == 1 && b % 4294967296 <= (A + 4294967294) % 4294967296) && 2 <= A % 4294967296) && 1 == cond) && q == 3) && A == r + b + 2) && A % 4294967296 < 4)) && cond == 1)) || ((((((A == r + 8 && 1 == cond) && b == (A + r * 4294967295) % 4294967296 / 2 % 4294967296 / 2) && (A + r * 4294967295) % 4294967296 <= A % 4294967296) && A % 4294967296 <= 10) && cond == 1) && q == 4))))) && r % 4294967296 <= 10) && B == b)) || (((((((B == 1 && r % 4294967296 < b % 4294967296) && b == B * 4) && B % 4294967296 <= r % 4294967296) && 1 == cond) && q == 0) && cond == 1) && A == r)) || ((((((((r + b) % 4294967296 < (A + r * 4294967295 + b * 4294967295) % 4294967296 / 2 % 4294967296 / 2 % 4294967296 && q == 9) && 1 == cond) && A == r + b + 8) && B == b) && cond == 1) && b == (A + r * 4294967295 + b * 4294967295) % 4294967296 / 2 % 4294967296 / 2 % 4294967296 / 2) && b % 4294967296 <= (r + b) % 4294967296)) || ((((((B == 1 && q == 1) && 1 == cond) && B == b) && A == r + b) && A % 4294967296 <= 10) && cond == 1)) || (((((((B == 1 && 8 <= A % 4294967296) && A == r + 8) && q == 2) && 1 == cond) && b == 4) && A % 4294967296 <= 10) && cond == 1)) || (((((((b == 16 && b == B * 16) && 1 == cond) && A % 4294967296 <= 10) && q == 0) && cond == 1) && A == r) && B * 8 % 4294967296 <= r % 4294967296)) || (((((((B == 1 && B % 4294967296 <= r % 4294967296) && 1 == cond) && r % 4294967296 < B * 4 % 4294967296) && q == 0) && cond == 1) && B * 2 == b) && A == r) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 222.8s, OverallIterations: 21, TraceHistogramMax: 5, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 23.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 272 SDtfs, 1033 SDslu, 1335 SDs, 0 SdLazy, 4243 SolverSat, 535 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 600 GetRequests, 246 SyntacticMatches, 13 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 181 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 32 NumberOfFragments, 2160 HoareAnnotationTreeSize, 4 FomulaSimplifications, 22429 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 4 FomulaSimplificationsInter, 9604 FormulaSimplificationTreeSizeReductionInter, 22.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 190.1s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 472 NumberOfCodeBlocks, 472 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 208217 SizeOfPredicates, 140 NumberOfNonLiveVariables, 1827 ConjunctsInSsa, 724 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 68/490 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 proved your program to be correct! Received shutdown request...