/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/cohencu-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:22:26,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:22:26,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:22:26,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:22:26,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:22:26,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:22:26,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:22:26,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:22:26,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:22:26,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:22:26,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:22:26,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:22:26,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:22:26,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:22:26,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:22:26,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:22:26,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:22:26,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:22:26,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:22:26,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:22:26,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:22:26,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:22:26,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:22:26,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:22:26,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:22:26,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:22:26,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:22:26,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:22:26,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:22:26,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:22:26,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:22:26,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:22:26,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:22:26,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:22:26,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:22:26,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:22:26,912 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 07:22:26,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:22:26,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:22:26,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:22:26,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:22:26,951 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:22:26,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:22:26,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:22:26,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:22:26,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:22:26,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:22:26,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:22:26,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:22:26,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:22:26,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:22:26,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:22:26,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:22:26,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:22:26,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:22:26,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:22:26,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:22:26,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:22:26,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:22:26,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:22:26,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:22:26,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:22:26,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:22:27,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:22:27,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:22:27,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:22:27,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:22:27,422 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:22:27,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound100.c [2020-12-23 07:22:27,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9a040dd5a/1b705572098d442a9c5af6f32147a8b2/FLAG83b7129f8 [2020-12-23 07:22:28,147 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:22:28,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound100.c [2020-12-23 07:22:28,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9a040dd5a/1b705572098d442a9c5af6f32147a8b2/FLAG83b7129f8 [2020-12-23 07:22:28,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9a040dd5a/1b705572098d442a9c5af6f32147a8b2 [2020-12-23 07:22:28,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:22:28,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:22:28,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:22:28,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:22:28,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:22:28,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d623d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28, skipping insertion in model container [2020-12-23 07:22:28,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:22:28,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:22:28,715 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/cohencu-ll_unwindbound100.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2020-12-23 07:22:28,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:22:28,751 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:22:28,764 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/cohencu-ll_unwindbound100.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2020-12-23 07:22:28,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:22:28,796 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:22:28,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28 WrapperNode [2020-12-23 07:22:28,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:22:28,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:22:28,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:22:28,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:22:28,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:22:28,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:22:28,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:22:28,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:22:28,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (1/1) ... [2020-12-23 07:22:28,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:22:28,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:22:28,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:22:28,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:22:28,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (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 07:22:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:22:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:22:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:22:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:22:29,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:22:29,617 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-23 07:22:29,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:22:29 BoogieIcfgContainer [2020-12-23 07:22:29,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:22:29,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:22:29,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:22:29,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:22:29,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:22:28" (1/3) ... [2020-12-23 07:22:29,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d43c161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:22:29, skipping insertion in model container [2020-12-23 07:22:29,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:22:28" (2/3) ... [2020-12-23 07:22:29,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d43c161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:22:29, skipping insertion in model container [2020-12-23 07:22:29,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:22:29" (3/3) ... [2020-12-23 07:22:29,651 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound100.c [2020-12-23 07:22:29,660 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:22:29,666 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 07:22:29,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 07:22:29,741 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:22:29,742 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:22:29,742 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:22:29,742 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:22:29,742 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:22:29,742 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:22:29,743 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:22:29,743 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:22:29,766 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-12-23 07:22:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 07:22:29,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:29,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 07:22:29,777 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:29,785 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-23 07:22:29,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:29,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882515] [2020-12-23 07:22:29,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:30,200 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 07:22:30,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882515] [2020-12-23 07:22:30,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:30,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:22:30,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035097213] [2020-12-23 07:22:30,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:22:30,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:30,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:22:30,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:22:30,230 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-12-23 07:22:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:30,520 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2020-12-23 07:22:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:22:30,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 07:22:30,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:30,533 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:22:30,533 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 07:22:30,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:22:30,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 07:22:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-23 07:22:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 07:22:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-23 07:22:30,593 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2020-12-23 07:22:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:30,594 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-23 07:22:30,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:22:30,594 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-23 07:22:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:22:30,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:30,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:30,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:22:30,597 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:30,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:30,600 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-23 07:22:30,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:30,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544428081] [2020-12-23 07:22:30,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:30,635 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:30,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589408676] [2020-12-23 07:22:30,636 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 07:22:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:30,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:22:30,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:30,801 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 07:22:30,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544428081] [2020-12-23 07:22:30,802 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:30,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589408676] [2020-12-23 07:22:30,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:30,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:22:30,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494215624] [2020-12-23 07:22:30,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:30,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:30,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:30,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:30,806 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-23 07:22:31,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:31,008 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2020-12-23 07:22:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:22:31,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-23 07:22:31,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:31,011 INFO L225 Difference]: With dead ends: 90 [2020-12-23 07:22:31,011 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 07:22:31,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 07:22:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 07:22:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2020-12-23 07:22:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:22:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-12-23 07:22:31,037 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 8 [2020-12-23 07:22:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:31,038 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-12-23 07:22:31,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-12-23 07:22:31,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:22:31,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:31,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:31,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:22:31,243 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:31,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:31,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2020-12-23 07:22:31,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:31,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566708511] [2020-12-23 07:22:31,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:31,295 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 07:22:31,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566708511] [2020-12-23 07:22:31,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:31,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:22:31,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030952346] [2020-12-23 07:22:31,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:22:31,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:31,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:22:31,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:22:31,301 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 4 states. [2020-12-23 07:22:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:31,341 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2020-12-23 07:22:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:22:31,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 07:22:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:31,345 INFO L225 Difference]: With dead ends: 84 [2020-12-23 07:22:31,345 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:22:31,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:22:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:22:31,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 07:22:31,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:22:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-12-23 07:22:31,370 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 9 [2020-12-23 07:22:31,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:31,371 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-12-23 07:22:31,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:22:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-12-23 07:22:31,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:22:31,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:31,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:31,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:22:31,378 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:31,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:31,380 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-23 07:22:31,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:31,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084882435] [2020-12-23 07:22:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:31,405 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:31,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001878542] [2020-12-23 07:22:31,406 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 07:22:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:31,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:22:31,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:31,533 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 07:22:31,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084882435] [2020-12-23 07:22:31,534 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:31,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001878542] [2020-12-23 07:22:31,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:31,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:22:31,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432962922] [2020-12-23 07:22:31,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:31,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:31,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:31,537 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 6 states. [2020-12-23 07:22:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:31,722 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2020-12-23 07:22:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:22:31,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-23 07:22:31,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:31,723 INFO L225 Difference]: With dead ends: 78 [2020-12-23 07:22:31,724 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 07:22:31,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 07:22:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 07:22:31,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-23 07:22:31,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:22:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-23 07:22:31,746 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 10 [2020-12-23 07:22:31,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:31,746 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-23 07:22:31,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:31,746 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-23 07:22:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:22:31,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:31,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:31,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:31,966 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:31,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:31,967 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2020-12-23 07:22:31,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:31,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423116520] [2020-12-23 07:22:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:31,979 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:31,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051186154] [2020-12-23 07:22:31,980 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 07:22:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:32,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:22:32,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:32,090 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 07:22:32,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423116520] [2020-12-23 07:22:32,091 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:32,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051186154] [2020-12-23 07:22:32,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:22:32,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:22:32,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062318783] [2020-12-23 07:22:32,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:32,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:32,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:32,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:32,094 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-12-23 07:22:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:32,235 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2020-12-23 07:22:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:22:32,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 07:22:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:32,237 INFO L225 Difference]: With dead ends: 77 [2020-12-23 07:22:32,237 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:22:32,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 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 07:22:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:22:32,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-12-23 07:22:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 07:22:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-12-23 07:22:32,247 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2020-12-23 07:22:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:32,247 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-12-23 07:22:32,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:32,247 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-12-23 07:22:32,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:22:32,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:32,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:32,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:32,462 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:32,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:32,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2020-12-23 07:22:32,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:32,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660092716] [2020-12-23 07:22:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:32,475 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:32,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243861037] [2020-12-23 07:22:32,476 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 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 07:22:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:32,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:22:32,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:32,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660092716] [2020-12-23 07:22:32,617 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:32,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243861037] [2020-12-23 07:22:32,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:32,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:22:32,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274355254] [2020-12-23 07:22:32,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:22:32,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:32,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:22:32,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:32,620 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 7 states. [2020-12-23 07:22:32,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:32,786 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-12-23 07:22:32,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:22:32,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-23 07:22:32,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:32,787 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:22:32,788 INFO L226 Difference]: Without dead ends: 95 [2020-12-23 07:22:32,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 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 07:22:32,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-23 07:22:32,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2020-12-23 07:22:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 07:22:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-12-23 07:22:32,799 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 20 [2020-12-23 07:22:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:32,800 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-12-23 07:22:32,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:22:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-12-23 07:22:32,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:22:32,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:32,801 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:33,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:33,015 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:33,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:33,016 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2020-12-23 07:22:33,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:33,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580441844] [2020-12-23 07:22:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:33,029 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:33,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712501941] [2020-12-23 07:22:33,030 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 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 07:22:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:33,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:22:33,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:33,178 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 07:22:33,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580441844] [2020-12-23 07:22:33,178 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:33,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712501941] [2020-12-23 07:22:33,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:33,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:22:33,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923780220] [2020-12-23 07:22:33,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:22:33,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:33,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:22:33,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:22:33,182 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 5 states. [2020-12-23 07:22:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:33,211 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2020-12-23 07:22:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:22:33,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-23 07:22:33,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:33,212 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:22:33,212 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 07:22:33,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 07:22:33,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-23 07:22:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 07:22:33,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-12-23 07:22:33,223 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 21 [2020-12-23 07:22:33,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:33,223 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-12-23 07:22:33,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:22:33,224 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-12-23 07:22:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:22:33,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:33,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:33,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:22:33,438 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:33,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:33,439 INFO L82 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2020-12-23 07:22:33,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:33,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174531209] [2020-12-23 07:22:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:33,451 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:33,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927519785] [2020-12-23 07:22:33,451 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 07:22:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:33,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:22:33,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:33,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174531209] [2020-12-23 07:22:33,641 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:33,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927519785] [2020-12-23 07:22:33,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:33,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:22:33,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717898174] [2020-12-23 07:22:33,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:22:33,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:33,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:22:33,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:33,644 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 7 states. [2020-12-23 07:22:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:33,819 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2020-12-23 07:22:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:22:33,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-23 07:22:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:33,820 INFO L225 Difference]: With dead ends: 92 [2020-12-23 07:22:33,820 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 07:22:33,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 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 07:22:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 07:22:33,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2020-12-23 07:22:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 07:22:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-12-23 07:22:33,830 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 22 [2020-12-23 07:22:33,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:33,830 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-12-23 07:22:33,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:22:33,830 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-12-23 07:22:33,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:22:33,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:33,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:34,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:34,045 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:34,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:34,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2020-12-23 07:22:34,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:34,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387221635] [2020-12-23 07:22:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:34,058 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:34,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063623637] [2020-12-23 07:22:34,058 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 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 07:22:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:34,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:22:34,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:34,376 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:22:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:34,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387221635] [2020-12-23 07:22:34,404 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:34,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063623637] [2020-12-23 07:22:34,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:34,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:22:34,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767524824] [2020-12-23 07:22:34,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:22:34,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:34,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:22:34,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:22:34,406 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 8 states. [2020-12-23 07:22:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:34,717 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-12-23 07:22:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:22:34,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:22:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:34,718 INFO L225 Difference]: With dead ends: 82 [2020-12-23 07:22:34,718 INFO L226 Difference]: Without dead ends: 80 [2020-12-23 07:22:34,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:22:34,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-23 07:22:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-12-23 07:22:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 07:22:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-12-23 07:22:34,727 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 31 [2020-12-23 07:22:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:34,728 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-12-23 07:22:34,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:22:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-12-23 07:22:34,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:22:34,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:34,729 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 07:22:34,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:34,945 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:34,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2020-12-23 07:22:34,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:34,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035932969] [2020-12-23 07:22:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:34,957 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:34,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232404790] [2020-12-23 07:22:34,958 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 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 07:22:35,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:22:35,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:22:35,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:22:35,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:35,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035932969] [2020-12-23 07:22:35,191 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:35,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232404790] [2020-12-23 07:22:35,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:35,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:22:35,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541575987] [2020-12-23 07:22:35,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:22:35,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:35,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:22:35,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:35,193 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 7 states. [2020-12-23 07:22:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:35,387 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2020-12-23 07:22:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:22:35,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-23 07:22:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:35,389 INFO L225 Difference]: With dead ends: 123 [2020-12-23 07:22:35,389 INFO L226 Difference]: Without dead ends: 121 [2020-12-23 07:22:35,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:22:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-23 07:22:35,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 81. [2020-12-23 07:22:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:22:35,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-12-23 07:22:35,399 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 32 [2020-12-23 07:22:35,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:35,400 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-12-23 07:22:35,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:22:35,400 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-12-23 07:22:35,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:22:35,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:35,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:35,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:22:35,617 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:35,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:35,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2020-12-23 07:22:35,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:35,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041110173] [2020-12-23 07:22:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:35,641 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:35,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656259164] [2020-12-23 07:22:35,642 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 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 07:22:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:35,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:22:35,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:35,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:22:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:35,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041110173] [2020-12-23 07:22:35,843 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:35,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656259164] [2020-12-23 07:22:35,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:35,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:22:35,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091223810] [2020-12-23 07:22:35,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:22:35,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:35,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:22:35,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:22:35,849 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 8 states. [2020-12-23 07:22:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:36,085 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-12-23 07:22:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:22:36,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-23 07:22:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:36,086 INFO L225 Difference]: With dead ends: 86 [2020-12-23 07:22:36,087 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 07:22:36,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:22:36,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 07:22:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-12-23 07:22:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:22:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-12-23 07:22:36,099 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 33 [2020-12-23 07:22:36,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:36,099 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-12-23 07:22:36,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:22:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-12-23 07:22:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:22:36,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:36,102 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:36,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:36,316 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:36,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:36,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2020-12-23 07:22:36,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:36,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752440839] [2020-12-23 07:22:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:36,326 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:36,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022866600] [2020-12-23 07:22:36,327 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 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 07:22:36,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:22:36,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:22:36,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:22:36,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:36,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752440839] [2020-12-23 07:22:36,471 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:36,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022866600] [2020-12-23 07:22:36,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:36,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:22:36,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056462270] [2020-12-23 07:22:36,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:22:36,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:36,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:22:36,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:22:36,473 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 6 states. [2020-12-23 07:22:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:36,516 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-12-23 07:22:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:22:36,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-12-23 07:22:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:36,518 INFO L225 Difference]: With dead ends: 105 [2020-12-23 07:22:36,518 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 07:22:36,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:22:36,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 07:22:36,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-12-23 07:22:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:22:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-12-23 07:22:36,526 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 33 [2020-12-23 07:22:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:36,527 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-12-23 07:22:36,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:22:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-12-23 07:22:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:22:36,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:36,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 07:22:36,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:36,744 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:36,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:36,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1367719072, now seen corresponding path program 2 times [2020-12-23 07:22:36,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:36,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735973760] [2020-12-23 07:22:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:36,754 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:36,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926874056] [2020-12-23 07:22:36,755 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 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 07:22:36,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:22:36,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:22:36,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:22:36,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:37,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735973760] [2020-12-23 07:22:37,001 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:37,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926874056] [2020-12-23 07:22:37,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:37,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:22:37,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608875607] [2020-12-23 07:22:37,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:22:37,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:37,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:22:37,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:22:37,006 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 9 states. [2020-12-23 07:22:37,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:37,289 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2020-12-23 07:22:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:22:37,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-23 07:22:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:37,291 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:22:37,291 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 07:22:37,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:22:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 07:22:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 75. [2020-12-23 07:22:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:22:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-12-23 07:22:37,301 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 34 [2020-12-23 07:22:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:37,301 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-12-23 07:22:37,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:22:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-12-23 07:22:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:22:37,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:37,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 07:22:37,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:22:37,516 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:37,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:37,517 INFO L82 PathProgramCache]: Analyzing trace with hash 118191875, now seen corresponding path program 1 times [2020-12-23 07:22:37,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:37,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017423076] [2020-12-23 07:22:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:37,536 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:37,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064536744] [2020-12-23 07:22:37,537 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:22:37,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:22:37,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:37,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017423076] [2020-12-23 07:22:37,747 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:37,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064536744] [2020-12-23 07:22:37,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:37,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:22:37,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990143762] [2020-12-23 07:22:37,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:22:37,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:37,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:22:37,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:22:37,749 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 7 states. [2020-12-23 07:22:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:37,944 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2020-12-23 07:22:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:22:37,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-23 07:22:37,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:37,945 INFO L225 Difference]: With dead ends: 109 [2020-12-23 07:22:37,945 INFO L226 Difference]: Without dead ends: 93 [2020-12-23 07:22:37,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:22:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-23 07:22:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-12-23 07:22:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 07:22:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2020-12-23 07:22:37,955 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 36 [2020-12-23 07:22:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:37,955 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2020-12-23 07:22:37,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:22:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2020-12-23 07:22:37,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 07:22:37,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:37,956 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:22:38,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:22:38,170 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:38,171 INFO L82 PathProgramCache]: Analyzing trace with hash -230259065, now seen corresponding path program 2 times [2020-12-23 07:22:38,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:38,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58103120] [2020-12-23 07:22:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:38,180 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:38,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52547283] [2020-12-23 07:22:38,181 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:38,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:22:38,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:22:38,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:22:38,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:38,392 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:22:38,519 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:22:38,521 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:22:38,523 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:22:38,526 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:22:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:22:38,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58103120] [2020-12-23 07:22:38,551 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:38,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52547283] [2020-12-23 07:22:38,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:38,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:22:38,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912455574] [2020-12-23 07:22:38,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:22:38,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:38,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:22:38,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:22:38,553 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 11 states. [2020-12-23 07:22:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:22:41,201 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2020-12-23 07:22:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:22:41,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-12-23 07:22:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:22:41,203 INFO L225 Difference]: With dead ends: 90 [2020-12-23 07:22:41,203 INFO L226 Difference]: Without dead ends: 88 [2020-12-23 07:22:41,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:22:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-23 07:22:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-12-23 07:22:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 07:22:41,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-12-23 07:22:41,211 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 43 [2020-12-23 07:22:41,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:22:41,212 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-12-23 07:22:41,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:22:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-12-23 07:22:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:22:41,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:22:41,213 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-23 07:22:41,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:22:41,427 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:22:41,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:22:41,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1212527061, now seen corresponding path program 3 times [2020-12-23 07:22:41,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:22:41,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836241864] [2020-12-23 07:22:41,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:22:41,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:22:41,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606727708] [2020-12-23 07:22:41,437 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:22:41,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:22:41,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:22:41,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:22:41,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:22:44,516 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)))) (and (= (+ (* 6 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (* 8 c_ULTIMATE.start_main_~y~0) .cse0 (* 18 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0))) (+ (* 6 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~n~0)) (* 12 c_ULTIMATE.start_main_~n~0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* 9 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) 7)) (let ((.cse1 (= c_ULTIMATE.start_main_~y~0 (+ (* 3 c_ULTIMATE.start_main_~n~0) .cse0 1)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)))))) is different from true [2020-12-23 07:22:52,815 WARN L197 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-23 07:22:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 07:22:52,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836241864] [2020-12-23 07:22:52,863 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:22:52,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606727708] [2020-12-23 07:22:52,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:22:52,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:22:52,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398595811] [2020-12-23 07:22:52,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:22:52,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:22:52,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:22:52,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=4, NotChecked=14, Total=90 [2020-12-23 07:22:52,865 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 10 states. [2020-12-23 07:23:20,754 WARN L197 SmtUtils]: Spent 27.86 s on a formula simplification that was a NOOP. DAG size: 41 [2020-12-23 07:24:00,730 WARN L197 SmtUtils]: Spent 39.95 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-23 07:24:44,997 WARN L197 SmtUtils]: Spent 30.90 s on a formula simplification that was a NOOP. DAG size: 49 [2020-12-23 07:24:53,338 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-12-23 07:25:08,003 WARN L197 SmtUtils]: Spent 4.35 s on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-12-23 07:25:30,525 WARN L197 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-23 07:26:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:03,631 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2020-12-23 07:26:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:26:03,631 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-23 07:26:03,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:03,632 INFO L225 Difference]: With dead ends: 94 [2020-12-23 07:26:03,632 INFO L226 Difference]: Without dead ends: 88 [2020-12-23 07:26:03,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 151.5s TimeCoverageRelationStatistics Valid=71, Invalid=160, Unknown=13, NotChecked=28, Total=272 [2020-12-23 07:26:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-23 07:26:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2020-12-23 07:26:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-23 07:26:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2020-12-23 07:26:03,663 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 44 [2020-12-23 07:26:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:03,663 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2020-12-23 07:26:03,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:26:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2020-12-23 07:26:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:26:03,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:03,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:03,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:26:03,865 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:26:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:03,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2059495850, now seen corresponding path program 2 times [2020-12-23 07:26:03,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:03,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152181855] [2020-12-23 07:26:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:03,886 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:03,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223425261] [2020-12-23 07:26:03,886 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true