/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:15:21,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:15:21,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:15:21,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:15:21,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:15:21,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:15:21,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:15:21,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:15:21,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:15:21,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:15:21,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:15:21,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:15:21,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:15:21,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:15:21,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:15:21,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:15:21,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:15:21,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:15:21,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:15:21,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:15:21,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:15:21,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:15:21,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:15:21,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:15:21,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 08:15:21,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 08:15:21,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 08:15:21,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 08:15:21,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 08:15:21,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 08:15:21,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 08:15:21,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 08:15:21,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 08:15:21,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:15:21,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:15:21,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:15:21,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 08:15:21,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:15:21,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:15:21,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:15:21,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:15:21,893 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:15:21,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:15:21,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:15:21,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:15:21,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:15:21,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:15:21,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:15:21,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:15:21,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:15:21,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:15:21,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:15:21,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:15:21,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:15:21,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:15:21,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:15:21,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:15:21,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:15:21,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:15:21,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:15:21,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:15:21,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:15:21,897 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:15:22,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:15:22,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:15:22,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:15:22,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:15:22,325 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:15:22,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.c [2020-12-23 08:15:22,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/380f44d08/1fb42f427ff64d8587c1fc41a9e501fb/FLAG10f46f871 [2020-12-23 08:15:23,022 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:15:23,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.c [2020-12-23 08:15:23,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/380f44d08/1fb42f427ff64d8587c1fc41a9e501fb/FLAG10f46f871 [2020-12-23 08:15:23,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/380f44d08/1fb42f427ff64d8587c1fc41a9e501fb [2020-12-23 08:15:23,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:15:23,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:15:23,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:15:23,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:15:23,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:15:23,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545664da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23, skipping insertion in model container [2020-12-23 08:15:23,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:15:23,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:15:23,577 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 08:15:23,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:15:23,604 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:15:23,618 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 08:15:23,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:15:23,641 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:15:23,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23 WrapperNode [2020-12-23 08:15:23,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:15:23,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:15:23,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:15:23,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:15:23,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:15:23,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:15:23,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:15:23,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:15:23,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (1/1) ... [2020-12-23 08:15:23,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:15:23,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:15:23,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:15:23,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:15:23,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:15:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:15:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:15:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:15:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:15:24,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:15:24,054 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-23 08:15:24,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:24 BoogieIcfgContainer [2020-12-23 08:15:24,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:15:24,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:15:24,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:15:24,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:15:24,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:15:23" (1/3) ... [2020-12-23 08:15:24,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4e32cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:15:24, skipping insertion in model container [2020-12-23 08:15:24,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:23" (2/3) ... [2020-12-23 08:15:24,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4e32cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:15:24, skipping insertion in model container [2020-12-23 08:15:24,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:24" (3/3) ... [2020-12-23 08:15:24,065 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound50.c [2020-12-23 08:15:24,079 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:15:24,086 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 08:15:24,135 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 08:15:24,209 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:15:24,209 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:15:24,209 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:15:24,209 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:15:24,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:15:24,210 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:15:24,210 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:15:24,210 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:15:24,231 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-23 08:15:24,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 08:15:24,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:24,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:24,239 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:24,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:24,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-23 08:15:24,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:24,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327150301] [2020-12-23 08:15:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:24,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327150301] [2020-12-23 08:15:24,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:24,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 08:15:24,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556420370] [2020-12-23 08:15:24,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 08:15:24,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:24,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 08:15:24,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:15:24,476 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-23 08:15:24,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:24,496 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-12-23 08:15:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 08:15:24,498 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 08:15:24,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:24,507 INFO L225 Difference]: With dead ends: 63 [2020-12-23 08:15:24,507 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 08:15:24,510 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 [2020-12-23 08:15:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 08:15:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 08:15:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 08:15:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-23 08:15:24,549 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-12-23 08:15:24,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:24,549 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-23 08:15:24,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 08:15:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-23 08:15:24,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 08:15:24,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:24,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:24,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 08:15:24,551 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:24,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:24,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-23 08:15:24,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:24,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713677584] [2020-12-23 08:15:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:24,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713677584] [2020-12-23 08:15:24,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:24,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 08:15:24,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783332956] [2020-12-23 08:15:24,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 08:15:24,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:24,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 08:15:24,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 08:15:24,721 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-12-23 08:15:24,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:24,811 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-12-23 08:15:24,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:15:24,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 08:15:24,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:24,812 INFO L225 Difference]: With dead ends: 54 [2020-12-23 08:15:24,813 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 08:15:24,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:15:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 08:15:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-23 08:15:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 08:15:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-12-23 08:15:24,824 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-12-23 08:15:24,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:24,824 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-12-23 08:15:24,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 08:15:24,825 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-12-23 08:15:24,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 08:15:24,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:24,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:24,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 08:15:24,826 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:24,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-23 08:15:24,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:24,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062176681] [2020-12-23 08:15:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:24,843 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:24,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10349929] [2020-12-23 08:15:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:15:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:24,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 08:15:24,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:25,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062176681] [2020-12-23 08:15:25,054 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:25,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10349929] [2020-12-23 08:15:25,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:25,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 08:15:25,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980851540] [2020-12-23 08:15:25,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:25,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:25,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:25,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:25,058 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2020-12-23 08:15:25,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:25,182 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-12-23 08:15:25,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:15:25,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 08:15:25,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:25,184 INFO L225 Difference]: With dead ends: 51 [2020-12-23 08:15:25,184 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 08:15:25,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 08:15:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-12-23 08:15:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 08:15:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-12-23 08:15:25,193 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 9 [2020-12-23 08:15:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:25,194 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-12-23 08:15:25,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-12-23 08:15:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 08:15:25,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:25,195 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:25,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 08:15:25,411 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:25,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2020-12-23 08:15:25,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:25,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611832495] [2020-12-23 08:15:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:25,429 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:25,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482998854] [2020-12-23 08:15:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:15:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:25,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 08:15:25,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:25,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611832495] [2020-12-23 08:15:25,550 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:25,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482998854] [2020-12-23 08:15:25,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:25,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 08:15:25,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914679128] [2020-12-23 08:15:25,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:15:25,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:25,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:15:25,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:15:25,553 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-12-23 08:15:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:25,660 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-12-23 08:15:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:25,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 08:15:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:25,665 INFO L225 Difference]: With dead ends: 61 [2020-12-23 08:15:25,665 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 08:15:25,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 08:15:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-12-23 08:15:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 08:15:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-12-23 08:15:25,687 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-12-23 08:15:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:25,687 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-12-23 08:15:25,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:15:25,688 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-12-23 08:15:25,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 08:15:25,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:25,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:25,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:25,904 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:25,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:25,905 INFO L82 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2020-12-23 08:15:25,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:25,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023249035] [2020-12-23 08:15:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:25,919 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:25,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993798941] [2020-12-23 08:15:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:15:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:25,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 08:15:25,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:26,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023249035] [2020-12-23 08:15:26,054 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:26,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993798941] [2020-12-23 08:15:26,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:26,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 08:15:26,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44028803] [2020-12-23 08:15:26,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 08:15:26,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:26,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 08:15:26,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:26,056 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2020-12-23 08:15:26,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:26,181 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-12-23 08:15:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:26,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-23 08:15:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:26,182 INFO L225 Difference]: With dead ends: 58 [2020-12-23 08:15:26,182 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 08:15:26,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:26,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 08:15:26,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-12-23 08:15:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 08:15:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-12-23 08:15:26,189 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 16 [2020-12-23 08:15:26,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:26,189 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-12-23 08:15:26,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 08:15:26,190 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-12-23 08:15:26,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 08:15:26,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:26,190 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:26,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:26,406 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:26,407 INFO L82 PathProgramCache]: Analyzing trace with hash -435278385, now seen corresponding path program 2 times [2020-12-23 08:15:26,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:26,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514511960] [2020-12-23 08:15:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:26,419 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:26,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340813413] [2020-12-23 08:15:26,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:15:26,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:15:26,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:26,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 08:15:26,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:26,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514511960] [2020-12-23 08:15:26,527 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:26,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340813413] [2020-12-23 08:15:26,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:26,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:15:26,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858881782] [2020-12-23 08:15:26,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:26,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:26,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:26,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:26,529 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-12-23 08:15:26,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:26,630 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-12-23 08:15:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:15:26,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-23 08:15:26,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:26,632 INFO L225 Difference]: With dead ends: 68 [2020-12-23 08:15:26,632 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 08:15:26,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 08:15:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-12-23 08:15:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 08:15:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-12-23 08:15:26,639 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2020-12-23 08:15:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:26,640 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-12-23 08:15:26,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-12-23 08:15:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 08:15:26,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:26,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:26,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:26,855 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:26,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:26,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1690544526, now seen corresponding path program 2 times [2020-12-23 08:15:26,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:26,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129047107] [2020-12-23 08:15:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:26,869 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:26,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92312967] [2020-12-23 08:15:26,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:15:26,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:15:26,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:26,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 08:15:26,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:27,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129047107] [2020-12-23 08:15:27,025 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:27,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92312967] [2020-12-23 08:15:27,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:27,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 08:15:27,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340184206] [2020-12-23 08:15:27,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 08:15:27,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:27,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 08:15:27,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:27,028 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 7 states. [2020-12-23 08:15:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:27,149 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-12-23 08:15:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 08:15:27,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-23 08:15:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:27,151 INFO L225 Difference]: With dead ends: 64 [2020-12-23 08:15:27,151 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 08:15:27,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 08:15:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-12-23 08:15:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 08:15:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-12-23 08:15:27,158 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2020-12-23 08:15:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:27,158 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-12-23 08:15:27,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 08:15:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-12-23 08:15:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 08:15:27,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:27,160 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:27,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 08:15:27,374 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:27,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:27,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 1 times [2020-12-23 08:15:27,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:27,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577959440] [2020-12-23 08:15:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:27,387 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:27,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195473184] [2020-12-23 08:15:27,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:15:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:27,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 08:15:27,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:27,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577959440] [2020-12-23 08:15:27,558 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:27,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195473184] [2020-12-23 08:15:27,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:27,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 08:15:27,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73824567] [2020-12-23 08:15:27,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:15:27,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:27,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:15:27,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:15:27,560 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 8 states. [2020-12-23 08:15:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:27,737 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-12-23 08:15:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:15:27,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-23 08:15:27,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:27,738 INFO L225 Difference]: With dead ends: 61 [2020-12-23 08:15:27,738 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 08:15:27,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 08:15:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 08:15:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-12-23 08:15:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 08:15:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-23 08:15:27,745 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 25 [2020-12-23 08:15:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:27,745 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-23 08:15:27,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:15:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-23 08:15:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 08:15:27,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:27,746 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:27,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:27,961 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:27,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:27,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1559508070, now seen corresponding path program 3 times [2020-12-23 08:15:27,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:27,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418341710] [2020-12-23 08:15:27,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:27,974 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:27,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286409412] [2020-12-23 08:15:27,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:15:28,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 08:15:28,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:28,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 08:15:28,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 08:15:28,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418341710] [2020-12-23 08:15:28,146 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:28,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286409412] [2020-12-23 08:15:28,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:28,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:15:28,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913558401] [2020-12-23 08:15:28,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:28,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:28,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:28,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:28,148 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 6 states. [2020-12-23 08:15:28,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:28,254 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-23 08:15:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:28,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-23 08:15:28,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:28,255 INFO L225 Difference]: With dead ends: 50 [2020-12-23 08:15:28,255 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 08:15:28,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:15:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 08:15:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-23 08:15:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 08:15:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-12-23 08:15:28,262 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 28 [2020-12-23 08:15:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:28,262 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-12-23 08:15:28,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:28,262 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-12-23 08:15:28,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 08:15:28,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:28,263 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:28,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:28,467 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:28,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:28,468 INFO L82 PathProgramCache]: Analyzing trace with hash 256486781, now seen corresponding path program 3 times [2020-12-23 08:15:28,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:28,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561785032] [2020-12-23 08:15:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:28,483 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:28,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664423659] [2020-12-23 08:15:28,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:15:28,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 08:15:28,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:28,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 08:15:28,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:34,074 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-23 08:15:42,312 WARN L197 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-23 08:15:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 08:15:43,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561785032] [2020-12-23 08:15:43,604 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:43,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664423659] [2020-12-23 08:15:43,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:43,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 08:15:43,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808458884] [2020-12-23 08:15:43,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 08:15:43,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:43,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 08:15:43,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=65, Unknown=4, NotChecked=0, Total=90 [2020-12-23 08:15:43,606 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 10 states. [2020-12-23 08:15:54,551 WARN L197 SmtUtils]: Spent 10.92 s on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-23 08:16:04,664 WARN L197 SmtUtils]: Spent 10.10 s on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2020-12-23 08:16:21,243 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (and (= c_ULTIMATE.start_main_~s~0 (+ c_ULTIMATE.start_main_~t~0 .cse0)) (= (+ (* 2 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~s~0)) (* 2 .cse0) (* 2 c_ULTIMATE.start_main_~s~0)) (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~s~0) (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) 1)) (let ((.cse1 (= c_ULTIMATE.start_main_~s~0 (+ .cse0 (* 2 c_ULTIMATE.start_main_~a~0) 1)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse1))) (= (+ (* c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) 1) (+ (* 2 c_ULTIMATE.start_main_~t~0) (* 4 .cse0))))) is different from false [2020-12-23 08:16:29,393 WARN L197 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-12-23 08:16:33,740 WARN L197 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 08:16:40,056 WARN L197 SmtUtils]: Spent 6.22 s on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-12-23 08:17:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:17:00,272 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-12-23 08:17:00,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 08:17:00,281 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-12-23 08:17:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:17:00,281 INFO L225 Difference]: With dead ends: 46 [2020-12-23 08:17:00,281 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 08:17:00,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 62.8s TimeCoverageRelationStatistics Valid=79, Invalid=189, Unknown=8, NotChecked=30, Total=306 [2020-12-23 08:17:00,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 08:17:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-12-23 08:17:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 08:17:00,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2020-12-23 08:17:00,296 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 30 [2020-12-23 08:17:00,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:17:00,296 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2020-12-23 08:17:00,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 08:17:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2020-12-23 08:17:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 08:17:00,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:17:00,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 08:17:00,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 08:17:00,515 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:17:00,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:17:00,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1670816768, now seen corresponding path program 2 times [2020-12-23 08:17:00,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:17:00,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160344214] [2020-12-23 08:17:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:17:00,527 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:17:00,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342086877] [2020-12-23 08:17:00,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:17:00,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 08:17:00,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:17:00,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 08:17:00,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:17:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-23 08:17:00,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160344214] [2020-12-23 08:17:00,805 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:17:00,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342086877] [2020-12-23 08:17:00,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:17:00,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 08:17:00,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377580929] [2020-12-23 08:17:00,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:17:00,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:17:00,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:17:00,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:17:00,807 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 8 states. [2020-12-23 08:17:16,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:17:16,423 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-12-23 08:17:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 08:17:16,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-23 08:17:16,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:17:16,425 INFO L225 Difference]: With dead ends: 44 [2020-12-23 08:17:16,425 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 08:17:16,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-23 08:17:16,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 08:17:16,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-23 08:17:16,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 08:17:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-12-23 08:17:16,436 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 32 [2020-12-23 08:17:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:17:16,436 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-12-23 08:17:16,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:17:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-12-23 08:17:16,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 08:17:16,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:17:16,437 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:17:16,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:17:16,651 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:17:16,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:17:16,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1584707773, now seen corresponding path program 1 times [2020-12-23 08:17:16,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:17:16,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030420899] [2020-12-23 08:17:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:17:16,667 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:17:16,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653752921] [2020-12-23 08:17:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:17:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:17:16,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 08:17:16,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:17:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-23 08:17:16,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030420899] [2020-12-23 08:17:16,816 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:17:16,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653752921] [2020-12-23 08:17:16,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:17:16,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 08:17:16,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39916655] [2020-12-23 08:17:16,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:17:16,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:17:16,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:17:16,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:17:16,819 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 5 states. [2020-12-23 08:17:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:17:16,916 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-12-23 08:17:16,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:17:16,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-23 08:17:16,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:17:16,918 INFO L225 Difference]: With dead ends: 42 [2020-12-23 08:17:16,918 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 08:17:16,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:17:16,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 08:17:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-23 08:17:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 08:17:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-12-23 08:17:16,928 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2020-12-23 08:17:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:17:16,929 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-12-23 08:17:16,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:17:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-12-23 08:17:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 08:17:16,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:17:16,930 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:17:17,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:17:17,146 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:17:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:17:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1809062816, now seen corresponding path program 1 times [2020-12-23 08:17:17,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:17:17,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133996279] [2020-12-23 08:17:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:17:17,157 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:17:17,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566389098] [2020-12-23 08:17:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 08:17:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:17:17,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 08:17:17,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:17:17,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133996279] [2020-12-23 08:17:17,314 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:17:17,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566389098] [2020-12-23 08:17:17,314 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 08:17:17,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:17:17,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 08:17:17,315 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 08:17:17,315 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 08:17:17,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 08:17:17,550 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 08:17:17,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:17:17 BoogieIcfgContainer [2020-12-23 08:17:17,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 08:17:17,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 08:17:17,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 08:17:17,552 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 08:17:17,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:24" (3/4) ... [2020-12-23 08:17:17,556 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 08:17:17,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 08:17:17,562 INFO L168 Benchmark]: Toolchain (without parser) took 114192.48 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 126.9 MB in the beginning and 160.7 MB in the end (delta: -33.8 MB). Peak memory consumption was 387.8 kB. Max. memory is 8.0 GB. [2020-12-23 08:17:17,562 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:17:17,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.85 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 08:17:17,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.40 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:17:17,567 INFO L168 Benchmark]: Boogie Preprocessor took 24.04 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 114.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:17:17,569 INFO L168 Benchmark]: RCFGBuilder took 349.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 99.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 08:17:17,570 INFO L168 Benchmark]: TraceAbstraction took 113493.56 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 99.5 MB in the beginning and 161.2 MB in the end (delta: -61.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:17:17,571 INFO L168 Benchmark]: Witness Printer took 5.44 ms. Allocated memory is still 184.5 MB. Free memory was 161.2 MB in the beginning and 160.7 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:17:17,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 273.85 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.9 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 37.40 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.04 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 114.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 349.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 99.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 113493.56 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 99.5 MB in the beginning and 161.2 MB in the end (delta: -61.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.44 ms. Allocated memory is still 184.5 MB. Free memory was 161.2 MB in the beginning and 160.7 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: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int n; [L22] long long a, s, t; [L23] n = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND TRUE !(s <= n) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 113.3s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 93.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 219 SDtfs, 250 SDslu, 482 SDs, 0 SdLazy, 763 SolverSat, 161 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 44.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 63.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 249 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 33272 SizeOfPredicates, 68 NumberOfNonLiveVariables, 899 ConjunctsInSsa, 210 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 134/192 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...