/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/cohendiv-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:52:28,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:52:28,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:52:28,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:52:28,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:52:28,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:52:28,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:52:28,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:52:28,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:52:28,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:52:28,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:52:28,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 04:52:29,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:52:29,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:52:29,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:52:29,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:52:29,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:52:29,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:52:29,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:52:29,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:52:29,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:52:29,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:52:29,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:52:29,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:52:29,069 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:52:29,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:52:29,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:52:29,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:52:29,074 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:52:29,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:52:29,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:52:29,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:52:29,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:52:29,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:52:29,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:52:29,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:52:29,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:52:29,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:52:29,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:52:29,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:52:29,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:52:29,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:52:29,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:52:29,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:52:29,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:52:29,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:52:29,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:52:29,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:52:29,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:52:29,080 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:52:29,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:52:29,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:52:29,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:52:29,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:52:29,540 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:52:29,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/cohendiv-ll.c [2020-12-22 04:52:29,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05eb8f80/4515fafa40344f349d8b82c7831cf02a/FLAG7759367e3 [2020-12-22 04:52:30,246 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:52:30,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/cohendiv-ll.c [2020-12-22 04:52:30,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05eb8f80/4515fafa40344f349d8b82c7831cf02a/FLAG7759367e3 [2020-12-22 04:52:30,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05eb8f80/4515fafa40344f349d8b82c7831cf02a [2020-12-22 04:52:30,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:52:30,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:52:30,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:52:30,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:52:30,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:52:30,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:30,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619895ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30, skipping insertion in model container [2020-12-22 04:52:30,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:30,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:52:30,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:52:30,899 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/cohendiv-ll.c[576,589] [2020-12-22 04:52:30,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:52:30,928 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:52:30,943 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/cohendiv-ll.c[576,589] [2020-12-22 04:52:30,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:52:30,966 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:52:30,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30 WrapperNode [2020-12-22 04:52:30,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:52:30,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:52:30,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:52:30,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:52:30,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:30,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:31,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:52:31,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:52:31,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:52:31,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:52:31,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:31,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:31,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:31,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:31,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:31,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:31,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (1/1) ... [2020-12-22 04:52:31,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:52:31,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:52:31,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:52:31,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:52:31,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (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 04:52:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:52:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:52:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:52:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:52:31,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:52:31,545 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 04:52:31,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:52:31 BoogieIcfgContainer [2020-12-22 04:52:31,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:52:31,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:52:31,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:52:31,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:52:31,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:52:30" (1/3) ... [2020-12-22 04:52:31,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d1c05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:52:31, skipping insertion in model container [2020-12-22 04:52:31,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:30" (2/3) ... [2020-12-22 04:52:31,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d1c05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:52:31, skipping insertion in model container [2020-12-22 04:52:31,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:52:31" (3/3) ... [2020-12-22 04:52:31,557 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll.c [2020-12-22 04:52:31,564 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:52:31,568 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 04:52:31,592 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 04:52:31,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:52:31,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:52:31,625 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:52:31,626 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:52:31,626 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:52:31,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:52:31,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:52:31,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:52:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-22 04:52:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:52:31,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:31,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:31,650 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:31,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:31,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-22 04:52:31,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:31,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607570381] [2020-12-22 04:52:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:31,823 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 04:52:31,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607570381] [2020-12-22 04:52:31,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:31,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:52:31,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609877254] [2020-12-22 04:52:31,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:52:31,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:31,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:52:31,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:52:31,849 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-12-22 04:52:31,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:31,872 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2020-12-22 04:52:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:52:31,873 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 04:52:31,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:31,883 INFO L225 Difference]: With dead ends: 75 [2020-12-22 04:52:31,883 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 04:52:31,886 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 04:52:31,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 04:52:31,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-22 04:52:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 04:52:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-12-22 04:52:31,927 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 7 [2020-12-22 04:52:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:31,928 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-12-22 04:52:31,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:52:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-12-22 04:52:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:52:31,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:31,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:31,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:52:31,929 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:31,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:31,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-22 04:52:31,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:31,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576100398] [2020-12-22 04:52:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:31,951 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:31,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007511520] [2020-12-22 04:52:31,952 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 04:52:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:32,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 04:52:32,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:32,132 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 04:52:32,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576100398] [2020-12-22 04:52:32,133 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:32,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007511520] [2020-12-22 04:52:32,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:32,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:52:32,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566698797] [2020-12-22 04:52:32,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:52:32,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:32,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:52:32,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:52:32,138 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 6 states. [2020-12-22 04:52:32,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:32,292 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-12-22 04:52:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:52:32,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-22 04:52:32,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:32,294 INFO L225 Difference]: With dead ends: 48 [2020-12-22 04:52:32,295 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 04:52:32,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:32,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 04:52:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2020-12-22 04:52:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 04:52:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-12-22 04:52:32,306 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 7 [2020-12-22 04:52:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:32,307 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-12-22 04:52:32,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:52:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-12-22 04:52:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:52:32,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:32,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:32,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 04:52:32,522 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:32,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:32,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-22 04:52:32,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:32,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001237173] [2020-12-22 04:52:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:32,540 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:32,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162710706] [2020-12-22 04:52:32,541 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 04:52:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:32,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 04:52:32,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:32,667 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 04:52:32,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001237173] [2020-12-22 04:52:32,669 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:32,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162710706] [2020-12-22 04:52:32,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:32,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:52:32,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136670984] [2020-12-22 04:52:32,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:52:32,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:32,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:52:32,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:52:32,674 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 6 states. [2020-12-22 04:52:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:32,888 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-12-22 04:52:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:52:32,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-22 04:52:32,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:32,890 INFO L225 Difference]: With dead ends: 65 [2020-12-22 04:52:32,890 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 04:52:32,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 04:52:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2020-12-22 04:52:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 04:52:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-12-22 04:52:32,904 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 9 [2020-12-22 04:52:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:32,905 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-12-22 04:52:32,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:52:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-12-22 04:52:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:52:32,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:32,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:33,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:33,126 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:33,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:33,127 INFO L82 PathProgramCache]: Analyzing trace with hash -578267872, now seen corresponding path program 1 times [2020-12-22 04:52:33,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:33,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145912794] [2020-12-22 04:52:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:33,144 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:33,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653468261] [2020-12-22 04:52:33,145 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 04:52:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:33,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 04:52:33,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:33,237 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 04:52:33,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145912794] [2020-12-22 04:52:33,238 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:33,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653468261] [2020-12-22 04:52:33,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:33,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:52:33,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313283509] [2020-12-22 04:52:33,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:52:33,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:33,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:52:33,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:52:33,241 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 6 states. [2020-12-22 04:52:33,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:33,397 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-12-22 04:52:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:52:33,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 04:52:33,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:33,399 INFO L225 Difference]: With dead ends: 91 [2020-12-22 04:52:33,399 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 04:52:33,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:52:33,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 04:52:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2020-12-22 04:52:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 04:52:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2020-12-22 04:52:33,412 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 12 [2020-12-22 04:52:33,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:33,412 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2020-12-22 04:52:33,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:52:33,412 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2020-12-22 04:52:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 04:52:33,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:33,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:33,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:33,627 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:33,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:33,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1843958970, now seen corresponding path program 1 times [2020-12-22 04:52:33,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:33,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353865773] [2020-12-22 04:52:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:33,644 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:33,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854307402] [2020-12-22 04:52:33,645 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 04:52:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:33,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 04:52:33,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:33,769 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 04:52:33,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353865773] [2020-12-22 04:52:33,770 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:33,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854307402] [2020-12-22 04:52:33,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:33,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:52:33,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084436076] [2020-12-22 04:52:33,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:52:33,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:33,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:52:33,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:52:33,775 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand 6 states. [2020-12-22 04:52:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:33,930 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-12-22 04:52:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:52:33,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 04:52:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:33,932 INFO L225 Difference]: With dead ends: 68 [2020-12-22 04:52:33,932 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 04:52:33,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:52:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 04:52:33,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-22 04:52:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 04:52:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-12-22 04:52:33,944 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 16 [2020-12-22 04:52:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:33,944 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-12-22 04:52:33,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:52:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-12-22 04:52:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 04:52:33,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:33,945 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:34,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:34,160 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:34,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:34,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1365902793, now seen corresponding path program 1 times [2020-12-22 04:52:34,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:34,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276342604] [2020-12-22 04:52:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:34,176 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:34,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809788688] [2020-12-22 04:52:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:34,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 04:52:34,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:34,433 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 04:52:34,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276342604] [2020-12-22 04:52:34,434 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:34,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809788688] [2020-12-22 04:52:34,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:34,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 04:52:34,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019852781] [2020-12-22 04:52:34,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:52:34,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:34,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:52:34,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:34,447 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 9 states. [2020-12-22 04:52:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:34,836 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-12-22 04:52:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:52:34,836 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-12-22 04:52:34,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:34,837 INFO L225 Difference]: With dead ends: 119 [2020-12-22 04:52:34,838 INFO L226 Difference]: Without dead ends: 113 [2020-12-22 04:52:34,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-12-22 04:52:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-22 04:52:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 84. [2020-12-22 04:52:34,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 04:52:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-12-22 04:52:34,874 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 21 [2020-12-22 04:52:34,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:34,875 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-12-22 04:52:34,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:52:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-12-22 04:52:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 04:52:34,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:34,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:35,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 04:52:35,081 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:35,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:35,082 INFO L82 PathProgramCache]: Analyzing trace with hash 2036194295, now seen corresponding path program 1 times [2020-12-22 04:52:35,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:35,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121230708] [2020-12-22 04:52:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:35,095 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:35,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460039836] [2020-12-22 04:52:35,096 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 04:52:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:35,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 04:52:35,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:35,392 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 04:52:35,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121230708] [2020-12-22 04:52:35,392 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:35,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460039836] [2020-12-22 04:52:35,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:35,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 04:52:35,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73515246] [2020-12-22 04:52:35,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:52:35,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:35,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:52:35,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:35,395 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 9 states. [2020-12-22 04:52:35,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:35,758 INFO L93 Difference]: Finished difference Result 147 states and 162 transitions. [2020-12-22 04:52:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 04:52:35,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-22 04:52:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:35,760 INFO L225 Difference]: With dead ends: 147 [2020-12-22 04:52:35,760 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 04:52:35,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-12-22 04:52:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 04:52:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2020-12-22 04:52:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 04:52:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-12-22 04:52:35,784 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 22 [2020-12-22 04:52:35,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:35,784 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-12-22 04:52:35,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:52:35,785 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-12-22 04:52:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 04:52:35,786 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:35,786 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:36,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:36,001 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:36,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:36,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1827275584, now seen corresponding path program 2 times [2020-12-22 04:52:36,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:36,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968551242] [2020-12-22 04:52:36,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:36,016 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:36,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049187149] [2020-12-22 04:52:36,016 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 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 04:52:36,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:52:36,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:52:36,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 04:52:36,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:36,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968551242] [2020-12-22 04:52:36,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:36,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049187149] [2020-12-22 04:52:36,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:36,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 04:52:36,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940447321] [2020-12-22 04:52:36,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:52:36,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:36,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:52:36,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:36,243 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 9 states. [2020-12-22 04:52:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:36,773 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2020-12-22 04:52:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:52:36,773 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-22 04:52:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:36,776 INFO L225 Difference]: With dead ends: 151 [2020-12-22 04:52:36,776 INFO L226 Difference]: Without dead ends: 145 [2020-12-22 04:52:36,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:52:36,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-22 04:52:36,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 102. [2020-12-22 04:52:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-22 04:52:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-12-22 04:52:36,791 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 30 [2020-12-22 04:52:36,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:36,792 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-12-22 04:52:36,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:52:36,792 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-12-22 04:52:36,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 04:52:36,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:36,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:37,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:37,007 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:37,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:37,009 INFO L82 PathProgramCache]: Analyzing trace with hash -841118368, now seen corresponding path program 1 times [2020-12-22 04:52:37,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:37,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225330821] [2020-12-22 04:52:37,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:37,021 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:37,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218046947] [2020-12-22 04:52:37,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:37,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 04:52:37,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:37,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225330821] [2020-12-22 04:52:37,399 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:37,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218046947] [2020-12-22 04:52:37,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:37,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 04:52:37,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624826515] [2020-12-22 04:52:37,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 04:52:37,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:37,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 04:52:37,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 04:52:37,408 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 13 states. [2020-12-22 04:52:38,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:38,028 INFO L93 Difference]: Finished difference Result 165 states and 182 transitions. [2020-12-22 04:52:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 04:52:38,028 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-12-22 04:52:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:38,030 INFO L225 Difference]: With dead ends: 165 [2020-12-22 04:52:38,030 INFO L226 Difference]: Without dead ends: 157 [2020-12-22 04:52:38,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-12-22 04:52:38,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-22 04:52:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-12-22 04:52:38,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-22 04:52:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2020-12-22 04:52:38,047 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 31 [2020-12-22 04:52:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:38,048 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2020-12-22 04:52:38,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 04:52:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2020-12-22 04:52:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 04:52:38,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:38,050 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:38,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 04:52:38,264 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:38,264 INFO L82 PathProgramCache]: Analyzing trace with hash -214287447, now seen corresponding path program 3 times [2020-12-22 04:52:38,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:38,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710258629] [2020-12-22 04:52:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:38,277 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:38,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390251951] [2020-12-22 04:52:38,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:38,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 04:52:38,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:52:38,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 04:52:38,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 04:52:40,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710258629] [2020-12-22 04:52:40,513 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:40,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390251951] [2020-12-22 04:52:40,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:40,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:52:40,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847997717] [2020-12-22 04:52:40,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:52:40,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:40,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:52:40,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2020-12-22 04:52:40,521 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand 7 states. [2020-12-22 04:52:46,748 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 17 [2020-12-22 04:52:54,809 WARN L197 SmtUtils]: Spent 8.05 s on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-12-22 04:52:58,856 WARN L197 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 22 [2020-12-22 04:53:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:26,168 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-12-22 04:53:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:53:26,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-12-22 04:53:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:26,170 INFO L225 Difference]: With dead ends: 138 [2020-12-22 04:53:26,170 INFO L226 Difference]: Without dead ends: 132 [2020-12-22 04:53:26,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=52, Invalid=95, Unknown=9, NotChecked=0, Total=156 [2020-12-22 04:53:26,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-22 04:53:26,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 63. [2020-12-22 04:53:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 04:53:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-12-22 04:53:26,185 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 39 [2020-12-22 04:53:26,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:26,185 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-12-22 04:53:26,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:53:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-12-22 04:53:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 04:53:26,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:26,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:26,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:26,387 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:26,388 INFO L82 PathProgramCache]: Analyzing trace with hash 294937111, now seen corresponding path program 2 times [2020-12-22 04:53:26,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:26,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063762329] [2020-12-22 04:53:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:26,409 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:26,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93762669] [2020-12-22 04:53:26,411 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 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 04:53:26,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:53:26,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:26,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-22 04:53:26,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:27,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063762329] [2020-12-22 04:53:27,010 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:27,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93762669] [2020-12-22 04:53:27,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:27,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-22 04:53:27,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173747630] [2020-12-22 04:53:27,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 04:53:27,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:27,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 04:53:27,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-12-22 04:53:27,012 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 16 states. [2020-12-22 04:53:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:28,122 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2020-12-22 04:53:28,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 04:53:28,124 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-12-22 04:53:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:28,126 INFO L225 Difference]: With dead ends: 111 [2020-12-22 04:53:28,126 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 04:53:28,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2020-12-22 04:53:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 04:53:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-12-22 04:53:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 04:53:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-12-22 04:53:28,142 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 40 [2020-12-22 04:53:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:28,142 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-12-22 04:53:28,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 04:53:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-12-22 04:53:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 04:53:28,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:28,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:28,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:28,344 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:28,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:28,345 INFO L82 PathProgramCache]: Analyzing trace with hash -165636567, now seen corresponding path program 3 times [2020-12-22 04:53:28,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:28,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077344099] [2020-12-22 04:53:28,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:28,365 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:28,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813682281] [2020-12-22 04:53:28,370 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 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 04:53:28,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 04:53:28,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:28,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 04:53:28,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 04:53:28,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077344099] [2020-12-22 04:53:28,588 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:28,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813682281] [2020-12-22 04:53:28,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:28,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 04:53:28,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360679425] [2020-12-22 04:53:28,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:53:28,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:28,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:53:28,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:53:28,590 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 6 states. [2020-12-22 04:53:30,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:30,778 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-12-22 04:53:30,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:53:30,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-12-22 04:53:30,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:30,781 INFO L225 Difference]: With dead ends: 99 [2020-12-22 04:53:30,781 INFO L226 Difference]: Without dead ends: 91 [2020-12-22 04:53:30,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-22 04:53:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 56. [2020-12-22 04:53:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 04:53:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-12-22 04:53:30,801 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 44 [2020-12-22 04:53:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:30,803 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-12-22 04:53:30,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:53:30,803 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-12-22 04:53:30,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 04:53:30,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:30,809 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:31,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 04:53:31,024 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:31,025 INFO L82 PathProgramCache]: Analyzing trace with hash 214690624, now seen corresponding path program 4 times [2020-12-22 04:53:31,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:31,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899580801] [2020-12-22 04:53:31,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:31,044 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:31,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352358946] [2020-12-22 04:53:31,045 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 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 04:53:31,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 04:53:31,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:31,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-22 04:53:31,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:32,045 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 04:53:32,180 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:53:32,191 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 04:53:32,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899580801] [2020-12-22 04:53:32,193 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:32,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352358946] [2020-12-22 04:53:32,193 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 04:53:32,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:32,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 04:53:32,194 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 04:53:32,194 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:53:32,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 04:53:32,441 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 04:53:32,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:53:32 BoogieIcfgContainer [2020-12-22 04:53:32,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:53:32,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:53:32,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:53:32,443 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:53:32,443 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:52:31" (3/4) ... [2020-12-22 04:53:32,449 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 04:53:32,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:53:32,454 INFO L168 Benchmark]: Toolchain (without parser) took 61798.76 ms. Allocated memory was 151.0 MB in the beginning and 238.0 MB in the end (delta: 87.0 MB). Free memory was 126.6 MB in the beginning and 132.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. [2020-12-22 04:53:32,457 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:53:32,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:53:32,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.86 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:53:32,464 INFO L168 Benchmark]: Boogie Preprocessor took 25.65 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:53:32,464 INFO L168 Benchmark]: RCFGBuilder took 511.27 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 129.6 MB in the end (delta: -15.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. [2020-12-22 04:53:32,466 INFO L168 Benchmark]: TraceAbstraction took 60892.51 ms. Allocated memory was 151.0 MB in the beginning and 238.0 MB in the end (delta: 87.0 MB). Free memory was 129.1 MB in the beginning and 133.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 84.7 MB. Max. memory is 8.0 GB. [2020-12-22 04:53:32,469 INFO L168 Benchmark]: Witness Printer took 6.95 ms. Allocated memory is still 238.0 MB. Free memory was 133.0 MB in the beginning and 132.4 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:53:32,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.86 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.65 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 511.27 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 129.6 MB in the end (delta: -15.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 60892.51 ms. Allocated memory was 151.0 MB in the beginning and 238.0 MB in the end (delta: 87.0 MB). Free memory was 129.1 MB in the beginning and 133.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 84.7 MB. Max. memory is 8.0 GB. * Witness Printer took 6.95 ms. Allocated memory is still 238.0 MB. Free memory was 133.0 MB in the beginning and 132.4 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: 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: [L23] int x, y; [L24] long long q, r, a, b; [L26] x = __VERIFIER_nondet_int() [L27] y = __VERIFIER_nondet_int() [L12] COND FALSE !(!cond) [L31] q = 0 [L32] r = x [L33] a = 0 [L34] b = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= y)) [L42] a = 1 [L43] b = y [L45] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(r >= 2 * b)) [L15] COND FALSE !(!(cond)) [L55] a = 2 * a [L56] b = 2 * b [L45] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(r >= 2 * b)) [L15] COND FALSE !(!(cond)) [L55] a = 2 * a [L56] b = 2 * b [L45] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(r >= 2 * b)) [L15] COND FALSE !(!(cond)) [L55] a = 2 * a [L56] b = 2 * b [L45] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND TRUE !(r >= 2 * b) [L58] r = r - b [L59] q = q + a [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 60.7s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 51.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 277 SDtfs, 1338 SDslu, 577 SDs, 0 SdLazy, 1396 SolverSat, 359 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 16.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 335 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 37.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 280 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 278 NumberOfCodeBlocks, 247 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 72644 SizeOfPredicates, 97 NumberOfNonLiveVariables, 1099 ConjunctsInSsa, 263 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 65/125 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...