/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/prodbin-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:55:56,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:55:56,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:55:56,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:55:56,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:55:56,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:55:56,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:55:56,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:55:56,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:55:56,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:55:56,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:55:56,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:55:56,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:55:56,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:55:56,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:55:56,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:55:56,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:55:56,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:55:56,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:55:56,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:55:56,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:55:56,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:55:56,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:55:56,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:55:56,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:55:56,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:55:56,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:55:56,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:55:56,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:55:56,893 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:55:56,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:55:56,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:55:56,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:55:56,899 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:55:56,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:55:56,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:55:56,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:55:56,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:55:56,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:55:56,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:55:56,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:55:56,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:55:56,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:55:56,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:55:56,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:55:56,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:55:56,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:55:56,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:55:56,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:55:56,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:55:56,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:55:56,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:55:56,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:55:56,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:55:56,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:55:57,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:55:57,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:55:57,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:55:57,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:55:57,378 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:55:57,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/prodbin-ll.c [2020-12-22 04:55:57,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8cafadbe/8e5a24b330d04d828e11c455396598fe/FLAGfc8854b6d [2020-12-22 04:55:58,193 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:55:58,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/prodbin-ll.c [2020-12-22 04:55:58,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8cafadbe/8e5a24b330d04d828e11c455396598fe/FLAGfc8854b6d [2020-12-22 04:55:58,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8cafadbe/8e5a24b330d04d828e11c455396598fe [2020-12-22 04:55:58,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:55:58,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:55:58,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:55:58,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:55:58,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:55:58,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ee35be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58, skipping insertion in model container [2020-12-22 04:55:58,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:55:58,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:55:58,729 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/prodbin-ll.c[537,550] [2020-12-22 04:55:58,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:55:58,756 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:55:58,770 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/prodbin-ll.c[537,550] [2020-12-22 04:55:58,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:55:58,790 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:55:58,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58 WrapperNode [2020-12-22 04:55:58,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:55:58,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:55:58,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:55:58,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:55:58,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:55:58,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:55:58,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:55:58,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:55:58,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (1/1) ... [2020-12-22 04:55:58,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:55:58,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:55:58,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:55:58,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:55:58,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (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 04:55:58,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:55:58,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:55:58,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:55:58,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:55:59,257 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:55:59,257 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-22 04:55:59,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:55:59 BoogieIcfgContainer [2020-12-22 04:55:59,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:55:59,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:55:59,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:55:59,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:55:59,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:55:58" (1/3) ... [2020-12-22 04:55:59,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234c0cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:55:59, skipping insertion in model container [2020-12-22 04:55:59,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:55:58" (2/3) ... [2020-12-22 04:55:59,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234c0cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:55:59, skipping insertion in model container [2020-12-22 04:55:59,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:55:59" (3/3) ... [2020-12-22 04:55:59,295 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll.c [2020-12-22 04:55:59,308 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:55:59,320 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 04:55:59,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 04:55:59,388 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:55:59,388 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:55:59,388 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:55:59,389 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:55:59,389 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:55:59,389 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:55:59,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:55:59,389 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:55:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-22 04:55:59,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:55:59,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:55:59,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:55:59,420 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:55:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:55:59,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-22 04:55:59,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:55:59,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565094972] [2020-12-22 04:55:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:55:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:55:59,698 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 04:55:59,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565094972] [2020-12-22 04:55:59,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:55:59,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:55:59,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568464461] [2020-12-22 04:55:59,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:55:59,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:55:59,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:55:59,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:55:59,733 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-12-22 04:55:59,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:55:59,752 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2020-12-22 04:55:59,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:55:59,754 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 04:55:59,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:55:59,763 INFO L225 Difference]: With dead ends: 35 [2020-12-22 04:55:59,764 INFO L226 Difference]: Without dead ends: 15 [2020-12-22 04:55:59,767 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 04:55:59,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-22 04:55:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-22 04:55:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-22 04:55:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-12-22 04:55:59,808 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2020-12-22 04:55:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:55:59,808 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-12-22 04:55:59,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:55:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-12-22 04:55:59,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:55:59,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:55:59,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:55:59,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:55:59,810 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:55:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:55:59,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-22 04:55:59,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:55:59,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60413701] [2020-12-22 04:55:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:55:59,833 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:55:59,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321145882] [2020-12-22 04:55:59,834 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 04:55:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:55:59,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:55:59,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:00,117 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 04:56:00,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60413701] [2020-12-22 04:56:00,118 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:00,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321145882] [2020-12-22 04:56:00,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:56:00,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:56:00,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459983244] [2020-12-22 04:56:00,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:56:00,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:00,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:56:00,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:56:00,123 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 6 states. [2020-12-22 04:56:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:00,310 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-12-22 04:56:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:56:00,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-22 04:56:00,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:00,311 INFO L225 Difference]: With dead ends: 28 [2020-12-22 04:56:00,312 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 04:56:00,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:56:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 04:56:00,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-12-22 04:56:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 04:56:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-22 04:56:00,320 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7 [2020-12-22 04:56:00,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:00,321 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-22 04:56:00,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:56:00,321 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-22 04:56:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:56:00,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:00,322 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:56:00,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 04:56:00,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:00,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:00,538 INFO L82 PathProgramCache]: Analyzing trace with hash -464828708, now seen corresponding path program 1 times [2020-12-22 04:56:00,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:00,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894616949] [2020-12-22 04:56:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:00,555 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:00,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213155891] [2020-12-22 04:56:00,556 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 04:56:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:00,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 04:56:00,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:00,962 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:56:01,020 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:56:01,061 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 04:56:03,124 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 04:56:03,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894616949] [2020-12-22 04:56:03,125 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:03,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213155891] [2020-12-22 04:56:03,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:56:03,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:56:03,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111074655] [2020-12-22 04:56:03,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:56:03,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:03,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:56:03,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:56:03,129 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-12-22 04:56:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:06,965 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-12-22 04:56:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 04:56:06,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-22 04:56:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:06,967 INFO L225 Difference]: With dead ends: 34 [2020-12-22 04:56:06,967 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 04:56:06,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-12-22 04:56:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 04:56:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2020-12-22 04:56:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 04:56:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-22 04:56:06,974 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2020-12-22 04:56:06,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:06,974 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-22 04:56:06,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:56:06,975 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-22 04:56:06,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:56:06,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:06,975 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:56:07,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:56:07,191 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:07,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:07,192 INFO L82 PathProgramCache]: Analyzing trace with hash -462981666, now seen corresponding path program 1 times [2020-12-22 04:56:07,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:07,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421212482] [2020-12-22 04:56:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:07,207 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:07,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096926125] [2020-12-22 04:56:07,208 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 04:56:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:07,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 04:56:07,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:07,436 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:56:07,450 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:56:07,462 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 04:56:09,494 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 04:56:09,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421212482] [2020-12-22 04:56:09,495 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:09,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096926125] [2020-12-22 04:56:09,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:56:09,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:56:09,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055572717] [2020-12-22 04:56:09,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:56:09,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:09,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:56:09,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:56:09,497 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 8 states. [2020-12-22 04:56:11,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:11,357 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-12-22 04:56:11,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:56:11,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-22 04:56:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:11,358 INFO L225 Difference]: With dead ends: 36 [2020-12-22 04:56:11,358 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 04:56:11,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-12-22 04:56:11,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 04:56:11,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2020-12-22 04:56:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 04:56:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-22 04:56:11,365 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2020-12-22 04:56:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:11,365 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-22 04:56:11,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:56:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-22 04:56:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 04:56:11,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:11,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:56:11,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:56:11,580 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:11,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:11,581 INFO L82 PathProgramCache]: Analyzing trace with hash -732578001, now seen corresponding path program 1 times [2020-12-22 04:56:11,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:11,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925516859] [2020-12-22 04:56:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:11,595 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:11,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795587476] [2020-12-22 04:56:11,596 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 04:56:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:11,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 04:56:11,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:12,180 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2020-12-22 04:56:12,189 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-12-22 04:56:12,190 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:56:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:56:12,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925516859] [2020-12-22 04:56:12,271 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:12,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795587476] [2020-12-22 04:56:12,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:56:12,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 04:56:12,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855523583] [2020-12-22 04:56:12,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 04:56:12,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:12,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 04:56:12,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:56:12,274 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 10 states. [2020-12-22 04:56:14,988 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-22 04:56:15,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:15,181 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-12-22 04:56:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:56:15,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-12-22 04:56:15,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:15,183 INFO L225 Difference]: With dead ends: 27 [2020-12-22 04:56:15,183 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 04:56:15,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-12-22 04:56:15,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 04:56:15,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-12-22 04:56:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 04:56:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-12-22 04:56:15,189 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2020-12-22 04:56:15,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:15,189 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-12-22 04:56:15,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 04:56:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-12-22 04:56:15,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 04:56:15,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:15,190 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 04:56:15,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:56:15,393 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:15,394 INFO L82 PathProgramCache]: Analyzing trace with hash 416810063, now seen corresponding path program 2 times [2020-12-22 04:56:15,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:15,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994657835] [2020-12-22 04:56:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:15,412 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:15,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822689229] [2020-12-22 04:56:15,413 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 04:56:15,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:56:15,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:56:15,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-22 04:56:15,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:15,977 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 04:56:16,013 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 04:56:16,039 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 04:56:16,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 04:56:16,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 04:56:16,280 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:56:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:56:16,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994657835] [2020-12-22 04:56:16,311 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:16,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822689229] [2020-12-22 04:56:16,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:56:16,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 04:56:16,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903835919] [2020-12-22 04:56:16,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 04:56:16,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:16,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 04:56:16,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 04:56:16,314 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 13 states. [2020-12-22 04:56:17,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:17,641 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-12-22 04:56:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 04:56:17,642 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-12-22 04:56:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:17,643 INFO L225 Difference]: With dead ends: 34 [2020-12-22 04:56:17,643 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 04:56:17,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-12-22 04:56:17,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 04:56:17,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-12-22 04:56:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 04:56:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-22 04:56:17,650 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2020-12-22 04:56:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:17,651 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-22 04:56:17,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 04:56:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-22 04:56:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 04:56:17,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:17,652 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:56:17,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 04:56:17,854 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:17,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:17,855 INFO L82 PathProgramCache]: Analyzing trace with hash 418657105, now seen corresponding path program 1 times [2020-12-22 04:56:17,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:17,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808506610] [2020-12-22 04:56:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:17,871 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:17,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767019995] [2020-12-22 04:56:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 04:56:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:17,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 04:56:17,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:18,001 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:56:18,015 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 04:56:22,087 WARN L197 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-12-22 04:56:28,488 WARN L197 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-12-22 04:56:28,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808506610] [2020-12-22 04:56:28,491 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:28,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767019995] [2020-12-22 04:56:28,492 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 04:56:28,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:56:28,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 04:56:28,492 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 04:56:28,492 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:56:28,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:56:28,711 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 04:56:28,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:56:28 BoogieIcfgContainer [2020-12-22 04:56:28,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:56:28,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:56:28,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:56:28,713 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:56:28,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:55:59" (3/4) ... [2020-12-22 04:56:28,716 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 04:56:28,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:56:28,717 INFO L168 Benchmark]: Toolchain (without parser) took 30186.96 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.1 MB in the beginning and 88.0 MB in the end (delta: 39.1 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:28,718 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:56:28,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.48 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 117.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:28,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.55 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:28,720 INFO L168 Benchmark]: Boogie Preprocessor took 25.60 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:28,721 INFO L168 Benchmark]: RCFGBuilder took 403.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 134.0 MB in the end (delta: -19.3 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:28,721 INFO L168 Benchmark]: TraceAbstraction took 29444.48 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.4 MB in the beginning and 88.0 MB in the end (delta: 45.4 MB). Peak memory consumption was 75.3 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:28,722 INFO L168 Benchmark]: Witness Printer took 3.55 ms. Allocated memory is still 181.4 MB. Free memory is still 88.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:56:28,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 258.48 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 117.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.55 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.60 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 403.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 134.0 MB in the end (delta: -19.3 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 29444.48 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.4 MB in the beginning and 88.0 MB in the end (delta: 45.4 MB). Peak memory consumption was 75.3 MB. Max. memory is 8.0 GB. * Witness Printer took 3.55 ms. Allocated memory is still 181.4 MB. Free memory is still 88.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int a, b; [L22] long long x, y, z; [L24] a = __VERIFIER_nondet_int() [L25] b = __VERIFIER_nondet_int() [L10] COND FALSE !(!cond) [L28] x = a [L29] y = b [L30] z = 0 [L32] COND TRUE 1 [L13] COND FALSE !(!(cond)) [L34] COND FALSE !(!(y != 0)) [L37] COND TRUE y % 2 == 1 [L38] z = z + x [L39] y = y - 1 [L41] x = 2 * x [L42] y = y / 2 [L32] COND TRUE 1 [L13] COND FALSE !(!(cond)) [L34] COND FALSE !(!(y != 0)) [L37] COND FALSE !(y % 2 == 1) [L41] x = 2 * x [L42] y = y / 2 [L32] COND TRUE 1 [L13] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 29.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 248 SDslu, 94 SDs, 0 SdLazy, 356 SolverSat, 70 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 32 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 1 QuantifiedInterpolants, 9926 SizeOfPredicates, 44 NumberOfNonLiveVariables, 367 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...