/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/egcd-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:29:25,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:29:25,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:29:25,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:29:25,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:29:25,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:29:25,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:29:25,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:29:25,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:29:25,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:29:25,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:29:25,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:29:25,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:29:25,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:29:25,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:29:25,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:29:25,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:29:25,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:29:25,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:29:25,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:29:25,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:29:25,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:29:25,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:29:25,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:29:25,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:29:25,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:29:25,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:29:25,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:29:25,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:29:26,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:29:26,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:29:26,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:29:26,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:29:26,016 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:29:26,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:29:26,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:29:26,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:29:26,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:29:26,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:29:26,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:29:26,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:29:26,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:29:26,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:29:26,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:29:26,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:29:26,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:29:26,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:29:26,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:29:26,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:29:26,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:29:26,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:29:26,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:29:26,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:29:26,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:29:26,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:29:26,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:29:26,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:29:26,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:29:26,510 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:29:26,511 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:29:26,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound100.c [2021-01-06 17:29:26,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a01aa73c6/607f61534b084698abfd80e9773d76f0/FLAG73e26a27e [2021-01-06 17:29:27,296 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:29:27,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound100.c [2021-01-06 17:29:27,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a01aa73c6/607f61534b084698abfd80e9773d76f0/FLAG73e26a27e [2021-01-06 17:29:27,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a01aa73c6/607f61534b084698abfd80e9773d76f0 [2021-01-06 17:29:27,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:29:27,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:29:27,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:29:27,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:29:27,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:29:27,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8d054d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27, skipping insertion in model container [2021-01-06 17:29:27,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:29:27,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:29:27,828 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/egcd-ll_unwindbound100.c[489,502] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:29:27,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:29:27,860 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:29:27,872 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/egcd-ll_unwindbound100.c[489,502] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:29:27,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:29:27,901 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:29:27,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27 WrapperNode [2021-01-06 17:29:27,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:29:27,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:29:27,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:29:27,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:29:27,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:29:27,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:29:27,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:29:27,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:29:27,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (1/1) ... [2021-01-06 17:29:27,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:29:27,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:29:27,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:29:27,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:29:27,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (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 [2021-01-06 17:29:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:29:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:29:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:29:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:29:28,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:29:28,448 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-01-06 17:29:28,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:29:28 BoogieIcfgContainer [2021-01-06 17:29:28,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:29:28,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:29:28,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:29:28,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:29:28,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:29:27" (1/3) ... [2021-01-06 17:29:28,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cefcc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:29:28, skipping insertion in model container [2021-01-06 17:29:28,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:27" (2/3) ... [2021-01-06 17:29:28,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cefcc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:29:28, skipping insertion in model container [2021-01-06 17:29:28,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:29:28" (3/3) ... [2021-01-06 17:29:28,470 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound100.c [2021-01-06 17:29:28,478 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:29:28,483 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:29:28,504 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:29:28,533 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:29:28,533 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:29:28,533 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:29:28,534 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:29:28,534 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:29:28,534 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:29:28,534 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:29:28,534 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:29:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:29:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:29:28,558 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:28,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:28,560 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:28,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:28,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-01-06 17:29:28,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:28,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623225718] [2021-01-06 17:29:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:28,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623225718] [2021-01-06 17:29:28,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:28,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:29:28,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975207609] [2021-01-06 17:29:28,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:29:28,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:28,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:29:28,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:29:28,791 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:29:28,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:28,816 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2021-01-06 17:29:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:29:28,818 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 17:29:28,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:28,829 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:29:28,829 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:29:28,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:29:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:29:28,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:29:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:29:28,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-01-06 17:29:28,875 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2021-01-06 17:29:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:28,876 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-01-06 17:29:28,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:29:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-01-06 17:29:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:29:28,877 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:28,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:28,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:29:28,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:28,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-01-06 17:29:28,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:28,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872963571] [2021-01-06 17:29:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:28,917 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:28,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027264940] [2021-01-06 17:29:28,918 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 [2021-01-06 17:29:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:29,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:29:29,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:29,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872963571] [2021-01-06 17:29:29,252 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:29,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027264940] [2021-01-06 17:29:29,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:29,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:29:29,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283376630] [2021-01-06 17:29:29,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:29:29,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:29,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:29:29,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:29:29,262 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2021-01-06 17:29:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:29,419 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-01-06 17:29:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:29:29,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 17:29:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:29,422 INFO L225 Difference]: With dead ends: 68 [2021-01-06 17:29:29,422 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 17:29:29,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:29:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 17:29:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-01-06 17:29:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 17:29:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2021-01-06 17:29:29,436 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 10 [2021-01-06 17:29:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:29,437 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2021-01-06 17:29:29,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:29:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2021-01-06 17:29:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:29:29,438 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:29,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:29,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:29:29,652 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:29,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1507402239, now seen corresponding path program 1 times [2021-01-06 17:29:29,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:29,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262373262] [2021-01-06 17:29:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:29,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262373262] [2021-01-06 17:29:29,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:29,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:29:29,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536642271] [2021-01-06 17:29:29,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:29:29,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:29,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:29:29,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:29:29,713 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 4 states. [2021-01-06 17:29:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:29,734 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2021-01-06 17:29:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:29:29,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 17:29:29,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:29,736 INFO L225 Difference]: With dead ends: 68 [2021-01-06 17:29:29,737 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:29:29,737 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 [2021-01-06 17:29:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:29:29,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-06 17:29:29,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:29:29,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-01-06 17:29:29,750 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 11 [2021-01-06 17:29:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:29,750 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-01-06 17:29:29,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:29:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-01-06 17:29:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:29:29,751 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:29,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:29,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:29:29,752 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:29,752 INFO L82 PathProgramCache]: Analyzing trace with hash 515817425, now seen corresponding path program 1 times [2021-01-06 17:29:29,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:29,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586744460] [2021-01-06 17:29:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:29,769 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:29,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027950167] [2021-01-06 17:29:29,770 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 [2021-01-06 17:29:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:29,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:29:29,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:29,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586744460] [2021-01-06 17:29:29,937 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:29,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027950167] [2021-01-06 17:29:29,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:29,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:29:29,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470371765] [2021-01-06 17:29:29,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:29:29,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:29,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:29:29,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:29:29,940 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 8 states. [2021-01-06 17:29:30,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:30,178 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2021-01-06 17:29:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:29:30,179 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2021-01-06 17:29:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:30,182 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:29:30,182 INFO L226 Difference]: Without dead ends: 96 [2021-01-06 17:29:30,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:29:30,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-06 17:29:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2021-01-06 17:29:30,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 17:29:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2021-01-06 17:29:30,198 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 12 [2021-01-06 17:29:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:30,198 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2021-01-06 17:29:30,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:29:30,198 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2021-01-06 17:29:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:29:30,199 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:30,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:30,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:30,420 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:30,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1779462740, now seen corresponding path program 1 times [2021-01-06 17:29:30,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:30,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834559192] [2021-01-06 17:29:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:30,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:30,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576487387] [2021-01-06 17:29:30,443 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 [2021-01-06 17:29:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:30,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:29:30,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:30,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834559192] [2021-01-06 17:29:30,551 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:30,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576487387] [2021-01-06 17:29:30,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:30,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:29:30,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285418750] [2021-01-06 17:29:30,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:29:30,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:30,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:29:30,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:29:30,554 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand 6 states. [2021-01-06 17:29:30,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:30,699 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2021-01-06 17:29:30,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:29:30,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 17:29:30,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:30,703 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:29:30,703 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 17:29:30,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:29:30,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 17:29:30,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-01-06 17:29:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-06 17:29:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-01-06 17:29:30,717 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 14 [2021-01-06 17:29:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:30,718 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-01-06 17:29:30,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:29:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-01-06 17:29:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:29:30,719 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:30,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:30,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:30,933 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:30,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:30,934 INFO L82 PathProgramCache]: Analyzing trace with hash -801918668, now seen corresponding path program 1 times [2021-01-06 17:29:30,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:30,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699974053] [2021-01-06 17:29:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:30,967 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:30,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155441736] [2021-01-06 17:29:30,969 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 [2021-01-06 17:29:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:31,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:29:31,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:31,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699974053] [2021-01-06 17:29:31,041 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:31,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155441736] [2021-01-06 17:29:31,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:31,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:29:31,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749691444] [2021-01-06 17:29:31,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:29:31,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:31,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:29:31,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:29:31,044 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2021-01-06 17:29:31,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:31,115 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2021-01-06 17:29:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:29:31,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-01-06 17:29:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:31,119 INFO L225 Difference]: With dead ends: 88 [2021-01-06 17:29:31,119 INFO L226 Difference]: Without dead ends: 86 [2021-01-06 17:29:31,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:29:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-01-06 17:29:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2021-01-06 17:29:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-06 17:29:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2021-01-06 17:29:31,148 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 17 [2021-01-06 17:29:31,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:31,148 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2021-01-06 17:29:31,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:29:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2021-01-06 17:29:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:29:31,151 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:31,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:31,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:31,367 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:31,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1844536457, now seen corresponding path program 1 times [2021-01-06 17:29:31,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:31,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880695092] [2021-01-06 17:29:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:31,386 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:31,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010083414] [2021-01-06 17:29:31,387 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 [2021-01-06 17:29:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:31,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 17:29:31,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:31,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880695092] [2021-01-06 17:29:31,586 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:31,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010083414] [2021-01-06 17:29:31,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:31,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:29:31,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358897393] [2021-01-06 17:29:31,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:29:31,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:31,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:29:31,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:29:31,589 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 8 states. [2021-01-06 17:29:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:31,866 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-01-06 17:29:31,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:29:31,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2021-01-06 17:29:31,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:31,868 INFO L225 Difference]: With dead ends: 111 [2021-01-06 17:29:31,868 INFO L226 Difference]: Without dead ends: 103 [2021-01-06 17:29:31,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:29:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-01-06 17:29:31,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 64. [2021-01-06 17:29:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 17:29:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-01-06 17:29:31,879 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 19 [2021-01-06 17:29:31,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:31,880 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-01-06 17:29:31,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:29:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-01-06 17:29:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:29:31,881 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:31,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:32,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:29:32,096 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:32,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1793740814, now seen corresponding path program 1 times [2021-01-06 17:29:32,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:32,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738789693] [2021-01-06 17:29:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:32,112 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:32,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323297154] [2021-01-06 17:29:32,113 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 [2021-01-06 17:29:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:32,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:29:32,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 17:29:32,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738789693] [2021-01-06 17:29:32,234 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:32,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323297154] [2021-01-06 17:29:32,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:32,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:29:32,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096021748] [2021-01-06 17:29:32,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:29:32,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:32,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:29:32,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:29:32,237 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 5 states. [2021-01-06 17:29:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:32,360 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-01-06 17:29:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:29:32,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-01-06 17:29:32,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:32,362 INFO L225 Difference]: With dead ends: 101 [2021-01-06 17:29:32,362 INFO L226 Difference]: Without dead ends: 97 [2021-01-06 17:29:32,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:29:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-06 17:29:32,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2021-01-06 17:29:32,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-06 17:29:32,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2021-01-06 17:29:32,382 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 19 [2021-01-06 17:29:32,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:32,382 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2021-01-06 17:29:32,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:29:32,382 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2021-01-06 17:29:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:29:32,383 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:32,383 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:32,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:32,596 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:32,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:32,597 INFO L82 PathProgramCache]: Analyzing trace with hash 171335487, now seen corresponding path program 1 times [2021-01-06 17:29:32,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:32,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794305039] [2021-01-06 17:29:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:32,618 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:32,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279824305] [2021-01-06 17:29:32,619 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 [2021-01-06 17:29:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:32,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:29:32,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:32,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794305039] [2021-01-06 17:29:32,744 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:32,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279824305] [2021-01-06 17:29:32,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:32,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:29:32,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740880294] [2021-01-06 17:29:32,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:29:32,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:32,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:29:32,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:29:32,756 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 5 states. [2021-01-06 17:29:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:32,791 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2021-01-06 17:29:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:29:32,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2021-01-06 17:29:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:32,792 INFO L225 Difference]: With dead ends: 109 [2021-01-06 17:29:32,792 INFO L226 Difference]: Without dead ends: 91 [2021-01-06 17:29:32,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:29:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-06 17:29:32,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-01-06 17:29:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-01-06 17:29:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2021-01-06 17:29:32,816 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 20 [2021-01-06 17:29:32,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:32,817 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2021-01-06 17:29:32,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:29:32,817 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2021-01-06 17:29:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 17:29:32,818 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:32,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:33,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:33,023 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:33,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:33,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1017079379, now seen corresponding path program 1 times [2021-01-06 17:29:33,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:33,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880740341] [2021-01-06 17:29:33,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:33,046 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:33,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557876511] [2021-01-06 17:29:33,049 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 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 [2021-01-06 17:29:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:33,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:29:33,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:33,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880740341] [2021-01-06 17:29:33,269 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:33,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557876511] [2021-01-06 17:29:33,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:33,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:29:33,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986838411] [2021-01-06 17:29:33,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:29:33,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:33,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:29:33,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:29:33,272 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand 8 states. [2021-01-06 17:29:33,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:33,479 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2021-01-06 17:29:33,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:29:33,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2021-01-06 17:29:33,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:33,481 INFO L225 Difference]: With dead ends: 133 [2021-01-06 17:29:33,481 INFO L226 Difference]: Without dead ends: 131 [2021-01-06 17:29:33,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:29:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-06 17:29:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2021-01-06 17:29:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-06 17:29:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2021-01-06 17:29:33,493 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 21 [2021-01-06 17:29:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:33,493 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2021-01-06 17:29:33,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:29:33,494 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2021-01-06 17:29:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:29:33,494 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:33,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:33,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:29:33,709 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:33,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:33,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1159045544, now seen corresponding path program 1 times [2021-01-06 17:29:33,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:33,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825407713] [2021-01-06 17:29:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:33,741 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:33,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341607747] [2021-01-06 17:29:33,741 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 [2021-01-06 17:29:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:33,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:29:33,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:34,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825407713] [2021-01-06 17:29:34,000 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:34,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341607747] [2021-01-06 17:29:34,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:34,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:29:34,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123304798] [2021-01-06 17:29:34,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:29:34,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:34,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:29:34,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:29:34,003 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 8 states. [2021-01-06 17:29:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:34,230 INFO L93 Difference]: Finished difference Result 148 states and 170 transitions. [2021-01-06 17:29:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:29:34,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2021-01-06 17:29:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:34,233 INFO L225 Difference]: With dead ends: 148 [2021-01-06 17:29:34,233 INFO L226 Difference]: Without dead ends: 136 [2021-01-06 17:29:34,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:29:34,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-06 17:29:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2021-01-06 17:29:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-01-06 17:29:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2021-01-06 17:29:34,250 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 23 [2021-01-06 17:29:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:34,250 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2021-01-06 17:29:34,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:29:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2021-01-06 17:29:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:29:34,252 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:34,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:34,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:34,467 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:34,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:34,468 INFO L82 PathProgramCache]: Analyzing trace with hash -559475920, now seen corresponding path program 1 times [2021-01-06 17:29:34,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:34,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359769944] [2021-01-06 17:29:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:34,480 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:34,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770230074] [2021-01-06 17:29:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:34,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:29:34,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:34,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359769944] [2021-01-06 17:29:34,697 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:34,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770230074] [2021-01-06 17:29:34,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:34,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:29:34,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024130745] [2021-01-06 17:29:34,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:29:34,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:34,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:29:34,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:29:34,705 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand 8 states. [2021-01-06 17:29:35,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:35,031 INFO L93 Difference]: Finished difference Result 157 states and 183 transitions. [2021-01-06 17:29:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:29:35,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-01-06 17:29:35,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:35,034 INFO L225 Difference]: With dead ends: 157 [2021-01-06 17:29:35,034 INFO L226 Difference]: Without dead ends: 153 [2021-01-06 17:29:35,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:29:35,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-01-06 17:29:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 132. [2021-01-06 17:29:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-06 17:29:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2021-01-06 17:29:35,052 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 28 [2021-01-06 17:29:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:35,052 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2021-01-06 17:29:35,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:29:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2021-01-06 17:29:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:29:35,062 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:35,062 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:35,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:35,277 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:35,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:35,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1572440212, now seen corresponding path program 2 times [2021-01-06 17:29:35,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:35,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12742787] [2021-01-06 17:29:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:35,289 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:35,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307881807] [2021-01-06 17:29:35,289 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 [2021-01-06 17:29:35,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:29:35,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:35,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:29:35,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:35,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12742787] [2021-01-06 17:29:35,512 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:35,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307881807] [2021-01-06 17:29:35,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:35,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:29:35,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851246526] [2021-01-06 17:29:35,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:29:35,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:35,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:29:35,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:29:35,514 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand 9 states. [2021-01-06 17:29:35,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:35,840 INFO L93 Difference]: Finished difference Result 161 states and 190 transitions. [2021-01-06 17:29:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:29:35,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2021-01-06 17:29:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:35,842 INFO L225 Difference]: With dead ends: 161 [2021-01-06 17:29:35,842 INFO L226 Difference]: Without dead ends: 151 [2021-01-06 17:29:35,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:29:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-01-06 17:29:35,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2021-01-06 17:29:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-01-06 17:29:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2021-01-06 17:29:35,877 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 28 [2021-01-06 17:29:35,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:35,878 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2021-01-06 17:29:35,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:29:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2021-01-06 17:29:35,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:29:35,879 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:35,879 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:36,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:29:36,093 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash -221158463, now seen corresponding path program 2 times [2021-01-06 17:29:36,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:36,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509326836] [2021-01-06 17:29:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:36,107 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:36,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098406076] [2021-01-06 17:29:36,107 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 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 [2021-01-06 17:29:36,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:29:36,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:36,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:29:36,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:36,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509326836] [2021-01-06 17:29:36,233 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:36,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098406076] [2021-01-06 17:29:36,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:36,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:29:36,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791413571] [2021-01-06 17:29:36,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:29:36,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:36,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:29:36,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:29:36,236 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand 6 states. [2021-01-06 17:29:36,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:36,290 INFO L93 Difference]: Finished difference Result 162 states and 193 transitions. [2021-01-06 17:29:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:29:36,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2021-01-06 17:29:36,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:36,292 INFO L225 Difference]: With dead ends: 162 [2021-01-06 17:29:36,292 INFO L226 Difference]: Without dead ends: 144 [2021-01-06 17:29:36,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:29:36,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-01-06 17:29:36,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-01-06 17:29:36,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2021-01-06 17:29:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2021-01-06 17:29:36,311 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 29 [2021-01-06 17:29:36,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:36,311 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2021-01-06 17:29:36,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:29:36,312 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2021-01-06 17:29:36,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:29:36,312 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:36,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:36,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:29:36,526 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:36,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1734668817, now seen corresponding path program 2 times [2021-01-06 17:29:36,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:36,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64689126] [2021-01-06 17:29:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:36,548 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:36,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862576643] [2021-01-06 17:29:36,550 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 [2021-01-06 17:29:36,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:29:36,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:36,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-06 17:29:36,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:36,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64689126] [2021-01-06 17:29:36,844 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:36,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862576643] [2021-01-06 17:29:36,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:36,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:29:36,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438988935] [2021-01-06 17:29:36,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:29:36,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:36,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:29:36,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:29:36,846 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand 9 states. [2021-01-06 17:29:37,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:37,318 INFO L93 Difference]: Finished difference Result 186 states and 216 transitions. [2021-01-06 17:29:37,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:29:37,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2021-01-06 17:29:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:37,320 INFO L225 Difference]: With dead ends: 186 [2021-01-06 17:29:37,320 INFO L226 Difference]: Without dead ends: 184 [2021-01-06 17:29:37,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:29:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-01-06 17:29:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 147. [2021-01-06 17:29:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2021-01-06 17:29:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2021-01-06 17:29:37,339 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 30 [2021-01-06 17:29:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:37,339 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2021-01-06 17:29:37,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:29:37,340 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2021-01-06 17:29:37,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:29:37,340 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:37,340 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:37,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:29:37,554 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:37,555 INFO L82 PathProgramCache]: Analyzing trace with hash 713600463, now seen corresponding path program 1 times [2021-01-06 17:29:37,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:37,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245550663] [2021-01-06 17:29:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:37,564 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:37,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928218943] [2021-01-06 17:29:37,565 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 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 [2021-01-06 17:29:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:37,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-06 17:29:37,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:37,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245550663] [2021-01-06 17:29:37,845 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:37,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928218943] [2021-01-06 17:29:37,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:37,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:29:37,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935968695] [2021-01-06 17:29:37,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:29:37,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:37,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:29:37,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:29:37,847 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 9 states. [2021-01-06 17:29:38,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:38,233 INFO L93 Difference]: Finished difference Result 183 states and 212 transitions. [2021-01-06 17:29:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:29:38,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2021-01-06 17:29:38,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:38,235 INFO L225 Difference]: With dead ends: 183 [2021-01-06 17:29:38,235 INFO L226 Difference]: Without dead ends: 181 [2021-01-06 17:29:38,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:29:38,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-01-06 17:29:38,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 147. [2021-01-06 17:29:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2021-01-06 17:29:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2021-01-06 17:29:38,254 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 30 [2021-01-06 17:29:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:38,254 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2021-01-06 17:29:38,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:29:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2021-01-06 17:29:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:29:38,255 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:38,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:38,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:38,470 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:38,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:38,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1249637014, now seen corresponding path program 1 times [2021-01-06 17:29:38,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:38,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266791480] [2021-01-06 17:29:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:38,482 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:38,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068660568] [2021-01-06 17:29:38,482 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 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 [2021-01-06 17:29:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:38,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:29:38,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:38,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266791480] [2021-01-06 17:29:38,706 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:38,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068660568] [2021-01-06 17:29:38,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:38,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:29:38,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246924507] [2021-01-06 17:29:38,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:29:38,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:38,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:29:38,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:29:38,708 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand 8 states. [2021-01-06 17:29:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:39,038 INFO L93 Difference]: Finished difference Result 191 states and 220 transitions. [2021-01-06 17:29:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:29:39,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-01-06 17:29:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:39,040 INFO L225 Difference]: With dead ends: 191 [2021-01-06 17:29:39,040 INFO L226 Difference]: Without dead ends: 179 [2021-01-06 17:29:39,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:29:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-01-06 17:29:39,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 139. [2021-01-06 17:29:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-01-06 17:29:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2021-01-06 17:29:39,060 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 32 [2021-01-06 17:29:39,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:39,060 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2021-01-06 17:29:39,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:29:39,060 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2021-01-06 17:29:39,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:29:39,061 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:39,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:39,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:29:39,274 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:39,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:39,275 INFO L82 PathProgramCache]: Analyzing trace with hash -744507692, now seen corresponding path program 2 times [2021-01-06 17:29:39,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:39,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332716524] [2021-01-06 17:29:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:39,294 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:39,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863006097] [2021-01-06 17:29:39,294 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:39,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:29:39,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:39,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2021-01-06 17:29:39,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:39,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332716524] [2021-01-06 17:29:39,636 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:39,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863006097] [2021-01-06 17:29:39,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:39,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:29:39,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002071197] [2021-01-06 17:29:39,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:29:39,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:39,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:29:39,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:29:39,638 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 10 states. [2021-01-06 17:29:39,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:39,868 INFO L93 Difference]: Finished difference Result 195 states and 226 transitions. [2021-01-06 17:29:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:29:39,869 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2021-01-06 17:29:39,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:39,870 INFO L225 Difference]: With dead ends: 195 [2021-01-06 17:29:39,870 INFO L226 Difference]: Without dead ends: 183 [2021-01-06 17:29:39,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:29:39,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-01-06 17:29:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2021-01-06 17:29:39,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-06 17:29:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2021-01-06 17:29:39,888 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 32 [2021-01-06 17:29:39,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:39,888 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2021-01-06 17:29:39,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:29:39,889 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2021-01-06 17:29:39,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:29:39,889 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:39,889 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:40,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:29:40,104 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:40,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1488876978, now seen corresponding path program 3 times [2021-01-06 17:29:40,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:40,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721160121] [2021-01-06 17:29:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:40,116 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:40,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382483208] [2021-01-06 17:29:40,116 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:40,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:29:40,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:40,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:29:40,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-06 17:29:40,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721160121] [2021-01-06 17:29:40,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:40,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382483208] [2021-01-06 17:29:40,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:40,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:29:40,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104369509] [2021-01-06 17:29:40,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:29:40,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:40,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:29:40,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:29:40,288 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 7 states. [2021-01-06 17:29:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:40,485 INFO L93 Difference]: Finished difference Result 194 states and 219 transitions. [2021-01-06 17:29:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:29:40,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2021-01-06 17:29:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:40,487 INFO L225 Difference]: With dead ends: 194 [2021-01-06 17:29:40,487 INFO L226 Difference]: Without dead ends: 190 [2021-01-06 17:29:40,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:29:40,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-01-06 17:29:40,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2021-01-06 17:29:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2021-01-06 17:29:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 182 transitions. [2021-01-06 17:29:40,513 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 182 transitions. Word has length 37 [2021-01-06 17:29:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:40,513 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 182 transitions. [2021-01-06 17:29:40,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:29:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 182 transitions. [2021-01-06 17:29:40,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:29:40,514 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:40,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:40,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:40,728 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:40,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash 475912686, now seen corresponding path program 4 times [2021-01-06 17:29:40,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:40,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367452562] [2021-01-06 17:29:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:40,738 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:40,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048618631] [2021-01-06 17:29:40,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:40,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:29:40,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:40,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:29:40,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:40,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367452562] [2021-01-06 17:29:40,963 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:40,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048618631] [2021-01-06 17:29:40,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:40,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:29:40,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148968557] [2021-01-06 17:29:40,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:29:40,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:40,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:29:40,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:29:40,965 INFO L87 Difference]: Start difference. First operand 154 states and 182 transitions. Second operand 9 states. [2021-01-06 17:29:41,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:41,525 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2021-01-06 17:29:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:29:41,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2021-01-06 17:29:41,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:41,528 INFO L225 Difference]: With dead ends: 192 [2021-01-06 17:29:41,529 INFO L226 Difference]: Without dead ends: 182 [2021-01-06 17:29:41,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:29:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-01-06 17:29:41,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2021-01-06 17:29:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-01-06 17:29:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2021-01-06 17:29:41,566 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 37 [2021-01-06 17:29:41,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:41,567 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2021-01-06 17:29:41,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:29:41,567 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2021-01-06 17:29:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:29:41,567 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:41,568 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:41,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:41,784 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:41,784 INFO L82 PathProgramCache]: Analyzing trace with hash 477759728, now seen corresponding path program 5 times [2021-01-06 17:29:41,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:41,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446487561] [2021-01-06 17:29:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:41,794 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:41,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580935875] [2021-01-06 17:29:41,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:42,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-06 17:29:42,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:42,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:29:42,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:42,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446487561] [2021-01-06 17:29:42,784 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:42,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580935875] [2021-01-06 17:29:42,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:42,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:29:42,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621907144] [2021-01-06 17:29:42,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:29:42,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:42,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:29:42,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:29:42,787 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 7 states. [2021-01-06 17:29:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:43,049 INFO L93 Difference]: Finished difference Result 201 states and 234 transitions. [2021-01-06 17:29:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:29:43,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2021-01-06 17:29:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:43,051 INFO L225 Difference]: With dead ends: 201 [2021-01-06 17:29:43,051 INFO L226 Difference]: Without dead ends: 197 [2021-01-06 17:29:43,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:29:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-01-06 17:29:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2021-01-06 17:29:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-01-06 17:29:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2021-01-06 17:29:43,073 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 37 [2021-01-06 17:29:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:43,074 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2021-01-06 17:29:43,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:29:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2021-01-06 17:29:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:29:43,074 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:43,075 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:43,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:43,281 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash -318408398, now seen corresponding path program 6 times [2021-01-06 17:29:43,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:43,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431189764] [2021-01-06 17:29:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:43,296 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:43,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386146731] [2021-01-06 17:29:43,297 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:43,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-01-06 17:29:43,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:43,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:29:43,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:43,466 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 17:29:43,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431189764] [2021-01-06 17:29:43,466 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:43,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386146731] [2021-01-06 17:29:43,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:43,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:29:43,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623167140] [2021-01-06 17:29:43,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:29:43,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:43,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:29:43,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:29:43,468 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 7 states. [2021-01-06 17:29:43,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:43,635 INFO L93 Difference]: Finished difference Result 200 states and 233 transitions. [2021-01-06 17:29:43,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:29:43,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2021-01-06 17:29:43,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:43,642 INFO L225 Difference]: With dead ends: 200 [2021-01-06 17:29:43,642 INFO L226 Difference]: Without dead ends: 190 [2021-01-06 17:29:43,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:29:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-01-06 17:29:43,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2021-01-06 17:29:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2021-01-06 17:29:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 211 transitions. [2021-01-06 17:29:43,670 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 211 transitions. Word has length 37 [2021-01-06 17:29:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:43,670 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 211 transitions. [2021-01-06 17:29:43,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:29:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 211 transitions. [2021-01-06 17:29:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:29:43,671 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:43,671 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:43,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:29:43,885 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:43,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash -316561356, now seen corresponding path program 7 times [2021-01-06 17:29:43,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:43,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830188376] [2021-01-06 17:29:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:43,894 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:43,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271485959] [2021-01-06 17:29:43,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:43,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:29:43,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:44,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830188376] [2021-01-06 17:29:44,142 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:44,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271485959] [2021-01-06 17:29:44,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:44,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:29:44,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133650435] [2021-01-06 17:29:44,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:29:44,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:44,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:29:44,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:29:44,144 INFO L87 Difference]: Start difference. First operand 177 states and 211 transitions. Second operand 10 states. [2021-01-06 17:29:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:44,614 INFO L93 Difference]: Finished difference Result 214 states and 251 transitions. [2021-01-06 17:29:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:29:44,615 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2021-01-06 17:29:44,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:44,616 INFO L225 Difference]: With dead ends: 214 [2021-01-06 17:29:44,616 INFO L226 Difference]: Without dead ends: 210 [2021-01-06 17:29:44,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-01-06 17:29:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-01-06 17:29:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 181. [2021-01-06 17:29:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-01-06 17:29:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2021-01-06 17:29:44,643 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 37 [2021-01-06 17:29:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:44,643 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2021-01-06 17:29:44,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:29:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2021-01-06 17:29:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:29:44,644 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:44,644 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:44,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-06 17:29:44,860 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:44,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1329525648, now seen corresponding path program 8 times [2021-01-06 17:29:44,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:44,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323598963] [2021-01-06 17:29:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:44,870 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:44,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932043906] [2021-01-06 17:29:44,870 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:44,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:29:44,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:44,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:29:44,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:45,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323598963] [2021-01-06 17:29:45,141 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:45,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932043906] [2021-01-06 17:29:45,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:45,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:29:45,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118007178] [2021-01-06 17:29:45,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:29:45,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:45,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:29:45,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:29:45,143 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand 10 states. [2021-01-06 17:29:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:45,621 INFO L93 Difference]: Finished difference Result 210 states and 247 transitions. [2021-01-06 17:29:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:29:45,622 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2021-01-06 17:29:45,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:45,623 INFO L225 Difference]: With dead ends: 210 [2021-01-06 17:29:45,623 INFO L226 Difference]: Without dead ends: 200 [2021-01-06 17:29:45,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-01-06 17:29:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-01-06 17:29:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 181. [2021-01-06 17:29:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-01-06 17:29:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2021-01-06 17:29:45,649 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 37 [2021-01-06 17:29:45,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:45,650 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2021-01-06 17:29:45,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:29:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2021-01-06 17:29:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 17:29:45,651 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:45,651 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:45,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:45,867 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:45,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:45,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1146728065, now seen corresponding path program 3 times [2021-01-06 17:29:45,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:45,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393016753] [2021-01-06 17:29:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:45,875 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:45,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708983046] [2021-01-06 17:29:45,876 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:45,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 17:29:45,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:45,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:29:45,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:46,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393016753] [2021-01-06 17:29:46,008 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:46,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708983046] [2021-01-06 17:29:46,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:46,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:29:46,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078186068] [2021-01-06 17:29:46,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:29:46,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:46,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:29:46,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:29:46,010 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand 7 states. [2021-01-06 17:29:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:46,105 INFO L93 Difference]: Finished difference Result 211 states and 251 transitions. [2021-01-06 17:29:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:29:46,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2021-01-06 17:29:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:46,107 INFO L225 Difference]: With dead ends: 211 [2021-01-06 17:29:46,107 INFO L226 Difference]: Without dead ends: 193 [2021-01-06 17:29:46,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:29:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-01-06 17:29:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-01-06 17:29:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-01-06 17:29:46,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 228 transitions. [2021-01-06 17:29:46,142 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 228 transitions. Word has length 38 [2021-01-06 17:29:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:46,143 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 228 transitions. [2021-01-06 17:29:46,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:29:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 228 transitions. [2021-01-06 17:29:46,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:29:46,144 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:46,144 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:46,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-06 17:29:46,358 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:46,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:46,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1188185069, now seen corresponding path program 3 times [2021-01-06 17:29:46,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:46,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521403899] [2021-01-06 17:29:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:46,368 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:46,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198257214] [2021-01-06 17:29:46,368 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:46,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:29:46,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:46,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:29:46,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-06 17:29:46,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521403899] [2021-01-06 17:29:46,687 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:46,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198257214] [2021-01-06 17:29:46,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:46,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:29:46,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636231175] [2021-01-06 17:29:46,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:29:46,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:46,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:29:46,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:29:46,689 INFO L87 Difference]: Start difference. First operand 193 states and 228 transitions. Second operand 11 states. [2021-01-06 17:29:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:51,017 INFO L93 Difference]: Finished difference Result 253 states and 290 transitions. [2021-01-06 17:29:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:29:51,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2021-01-06 17:29:51,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:51,019 INFO L225 Difference]: With dead ends: 253 [2021-01-06 17:29:51,020 INFO L226 Difference]: Without dead ends: 251 [2021-01-06 17:29:51,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:29:51,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-01-06 17:29:51,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 193. [2021-01-06 17:29:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-01-06 17:29:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 227 transitions. [2021-01-06 17:29:51,051 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 227 transitions. Word has length 39 [2021-01-06 17:29:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:51,051 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 227 transitions. [2021-01-06 17:29:51,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:29:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 227 transitions. [2021-01-06 17:29:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:29:51,052 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:51,052 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:51,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:51,268 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:29:51,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:51,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2085713873, now seen corresponding path program 2 times [2021-01-06 17:29:51,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:51,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146027595] [2021-01-06 17:29:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:51,278 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:51,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744625773] [2021-01-06 17:29:51,279 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:51,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:29:51,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:29:51,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 66 conjunts are in the unsatisfiable core [2021-01-06 17:29:51,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:53,870 WARN L197 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2021-01-06 17:29:55,902 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~p~0 2) (= (mod c_ULTIMATE.start_main_~r~0 3) 0) (= (+ c_ULTIMATE.start_main_~a~0 (* 3 c_ULTIMATE.start_main_~y~0)) (* 2 c_ULTIMATE.start_main_~x~0)) (<= c_ULTIMATE.start_main_~x~0 (* 2 c_ULTIMATE.start_main_~y~0)) (< c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0) (= 0 (+ (* c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0 (* (div (* c_ULTIMATE.start_main_~r~0 (- 2)) 3) c_ULTIMATE.start_main_~y~0)))) is different from false [2021-01-06 17:29:55,945 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:29:55,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:29:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2021-01-06 17:29:55,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146027595] [2021-01-06 17:29:55,987 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:55,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744625773] [2021-01-06 17:29:55,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:55,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:29:55,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653455617] [2021-01-06 17:29:55,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:29:55,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:55,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:29:55,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=97, Unknown=1, NotChecked=20, Total=156 [2021-01-06 17:29:55,989 INFO L87 Difference]: Start difference. First operand 193 states and 227 transitions. Second operand 13 states. [2021-01-06 17:30:08,786 WARN L197 SmtUtils]: Spent 12.18 s on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2021-01-06 17:30:10,956 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 1 c_ULTIMATE.start_main_~y~0))) (and .cse0 (= c_ULTIMATE.start_main_~p~0 2) (= (mod c_ULTIMATE.start_main_~r~0 3) 0) (= (+ c_ULTIMATE.start_main_~a~0 (* 3 c_ULTIMATE.start_main_~y~0)) (* 2 c_ULTIMATE.start_main_~x~0)) (<= c_ULTIMATE.start_main_~x~0 (* 2 c_ULTIMATE.start_main_~y~0)) (< c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond 0) (< c_ULTIMATE.start_main_~y~0 1)) (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond 1))) (= 0 (+ (* c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~y~0 (* (div (* c_ULTIMATE.start_main_~r~0 (- 2)) 3) c_ULTIMATE.start_main_~y~0))))) is different from false [2021-01-06 17:30:11,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:30:11,050 INFO L93 Difference]: Finished difference Result 264 states and 309 transitions. [2021-01-06 17:30:11,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:30:11,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2021-01-06 17:30:11,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:30:11,053 INFO L225 Difference]: With dead ends: 264 [2021-01-06 17:30:11,053 INFO L226 Difference]: Without dead ends: 262 [2021-01-06 17:30:11,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=106, Invalid=320, Unknown=2, NotChecked=78, Total=506 [2021-01-06 17:30:11,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-01-06 17:30:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 198. [2021-01-06 17:30:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-01-06 17:30:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 232 transitions. [2021-01-06 17:30:11,082 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 232 transitions. Word has length 39 [2021-01-06 17:30:11,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:30:11,082 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 232 transitions. [2021-01-06 17:30:11,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:30:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 232 transitions. [2021-01-06 17:30:11,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:30:11,083 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:30:11,083 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:30:11,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 17:30:11,299 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:30:11,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:30:11,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1047636459, now seen corresponding path program 3 times [2021-01-06 17:30:11,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:30:11,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966918427] [2021-01-06 17:30:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:30:11,309 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:30:11,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598902086] [2021-01-06 17:30:11,309 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:30:11,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:30:11,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:30:11,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:30:11,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:30:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-06 17:30:12,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966918427] [2021-01-06 17:30:12,099 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:30:12,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598902086] [2021-01-06 17:30:12,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:30:12,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:30:12,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165699442] [2021-01-06 17:30:12,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:30:12,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:30:12,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:30:12,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:30:12,100 INFO L87 Difference]: Start difference. First operand 198 states and 232 transitions. Second operand 10 states. [2021-01-06 17:30:27,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:30:27,079 INFO L93 Difference]: Finished difference Result 210 states and 243 transitions. [2021-01-06 17:30:27,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:30:27,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2021-01-06 17:30:27,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:30:27,080 INFO L225 Difference]: With dead ends: 210 [2021-01-06 17:30:27,080 INFO L226 Difference]: Without dead ends: 184 [2021-01-06 17:30:27,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=56, Invalid=125, Unknown=1, NotChecked=0, Total=182 [2021-01-06 17:30:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-01-06 17:30:27,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 164. [2021-01-06 17:30:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-01-06 17:30:27,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 188 transitions. [2021-01-06 17:30:27,104 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 188 transitions. Word has length 39 [2021-01-06 17:30:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:30:27,104 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 188 transitions. [2021-01-06 17:30:27,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:30:27,105 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 188 transitions. [2021-01-06 17:30:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:30:27,105 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:30:27,105 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:30:27,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-06 17:30:27,319 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:30:27,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:30:27,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1295664152, now seen corresponding path program 2 times [2021-01-06 17:30:27,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:30:27,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700005738] [2021-01-06 17:30:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:30:27,332 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:30:27,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63878087] [2021-01-06 17:30:27,333 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:30:27,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:30:27,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:30:27,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 62 conjunts are in the unsatisfiable core [2021-01-06 17:30:27,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:30:45,873 WARN L197 SmtUtils]: Spent 18.25 s on a formula simplification that was a NOOP. DAG size: 31 [2021-01-06 17:30:48,064 WARN L838 $PredicateComparison]: unable to prove that (and (= (+ c_ULTIMATE.start_main_~a~0 (* 2 c_ULTIMATE.start_main_~b~0)) c_ULTIMATE.start_main_~x~0) (= (+ (* 2 c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~p~0) 1) (< 0 c_ULTIMATE.start_main_~a~0) (<= 1 c_ULTIMATE.start_main_~x~0) (= c_ULTIMATE.start_main_~q~0 0) (= (+ (* 2 c_ULTIMATE.start_main_~s~0) c_ULTIMATE.start_main_~r~0) 0) (= (+ (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0) c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~a~0) (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~x~0)) (= c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~y~0) (not (= c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~a~0))) is different from false [2021-01-06 17:31:06,995 WARN L197 SmtUtils]: Spent 16.46 s on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-01-06 17:31:31,082 WARN L197 SmtUtils]: Spent 21.57 s on a formula simplification that was a NOOP. DAG size: 41 [2021-01-06 17:31:35,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700005738] [2021-01-06 17:31:35,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:35,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63878087] [2021-01-06 17:31:35,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:31:35,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:35,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:31:35,242 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:31:35,242 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:31:35,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-06 17:31:35,469 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:31:35,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:31:35 BoogieIcfgContainer [2021-01-06 17:31:35,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:31:35,470 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:31:35,470 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:31:35,470 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:31:35,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:29:28" (3/4) ... [2021-01-06 17:31:35,477 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:31:35,477 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:31:35,478 INFO L168 Benchmark]: Toolchain (without parser) took 127844.28 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 127.0 MB in the beginning and 160.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 131.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:35,478 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.2 MB in the end (delta: 95.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:31:35,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.11 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:35,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.84 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:35,479 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 113.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:35,480 INFO L168 Benchmark]: RCFGBuilder took 477.79 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 96.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:35,480 INFO L168 Benchmark]: TraceAbstraction took 127011.72 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 96.0 MB in the beginning and 161.1 MB in the end (delta: -65.1 MB). Peak memory consumption was 99.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:35,481 INFO L168 Benchmark]: Witness Printer took 7.12 ms. Allocated memory is still 314.6 MB. Free memory was 161.1 MB in the beginning and 160.6 MB in the end (delta: 531.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:31:35,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.2 MB in the end (delta: 95.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.11 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.84 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.84 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 113.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 477.79 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 96.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 127011.72 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 96.0 MB in the beginning and 161.1 MB in the end (delta: -65.1 MB). Peak memory consumption was 99.1 MB. Max. memory is 8.0 GB. * Witness Printer took 7.12 ms. Allocated memory is still 314.6 MB. Free memory was 161.1 MB in the beginning and 160.6 MB in the end (delta: 531.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L18] int counter = 0; [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L34] EXPR counter++ [L34] COND TRUE counter++<100 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L39] COND FALSE !(!(a != b)) [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s [L34] EXPR counter++ [L34] COND TRUE counter++<100 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L39] COND FALSE !(!(a != b)) [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s [L34] EXPR counter++ [L34] COND TRUE counter++<100 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L39] COND FALSE !(!(a != b)) [L42] COND FALSE !(a > b) [L47] b = b - a [L48] q = q - p [L49] s = s - r [L34] EXPR counter++ [L34] COND TRUE counter++<100 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 126.9s, OverallIterations: 29, TraceHistogramMax: 4, AutomataDifference: 40.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1105 SDtfs, 1889 SDslu, 3425 SDs, 0 SdLazy, 3321 SolverSat, 353 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 18.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 837 GetRequests, 566 SyntacticMatches, 2 SemanticMatches, 269 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 26.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 28 MinimizatonAttempts, 627 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 762 NumberOfCodeBlocks, 699 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 734 ConstructedInterpolants, 4 QuantifiedInterpolants, 298217 SizeOfPredicates, 251 NumberOfNonLiveVariables, 3212 ConjunctsInSsa, 744 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 108/519 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...