/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:19:51,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:19:51,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:19:51,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:19:51,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:19:51,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:19:51,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:19:51,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:19:51,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:19:51,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:19:51,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:19:51,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:19:51,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:19:51,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:19:51,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:19:51,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:19:51,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:19:51,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:19:51,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:19:51,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:19:51,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:19:51,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:19:51,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:19:51,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:19:51,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:19:51,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:19:51,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:19:51,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:19:51,440 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 17:19:51,471 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:19:51,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:19:51,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:19:51,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:19:51,473 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:19:51,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:19:51,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:19:51,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:19:51,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:19:51,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:19:51,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:19:51,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:19:51,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:19:51,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:19:51,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:19:51,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:19:51,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:19:51,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:19:51,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:19:51,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:19:51,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:19:51,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:19:51,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:19:51,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:19:51,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:19:51,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:19:51,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:19:51,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:19:51,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:19:51,879 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:19:51,879 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:19:51,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2021-01-06 17:19:51,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b546a3cde/ca337b6caced43b4a4ef42e28ca0591a/FLAG633543262 [2021-01-06 17:19:52,525 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:19:52,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2021-01-06 17:19:52,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b546a3cde/ca337b6caced43b4a4ef42e28ca0591a/FLAG633543262 [2021-01-06 17:19:52,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b546a3cde/ca337b6caced43b4a4ef42e28ca0591a [2021-01-06 17:19:52,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:19:52,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:19:52,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:19:52,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:19:52,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:19:52,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:19:52" (1/1) ... [2021-01-06 17:19:52,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65367c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:52, skipping insertion in model container [2021-01-06 17:19:52,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:19:52" (1/1) ... [2021-01-06 17:19:52,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:19:52,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:19:53,107 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2021-01-06 17:19:53,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:19:53,144 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:19:53,159 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2021-01-06 17:19:53,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:19:53,191 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:19:53,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53 WrapperNode [2021-01-06 17:19:53,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:19:53,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:19:53,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:19:53,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:19:53,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (1/1) ... [2021-01-06 17:19:53,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (1/1) ... [2021-01-06 17:19:53,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:19:53,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:19:53,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:19:53,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:19:53,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (1/1) ... [2021-01-06 17:19:53,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (1/1) ... [2021-01-06 17:19:53,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (1/1) ... [2021-01-06 17:19:53,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (1/1) ... [2021-01-06 17:19:53,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (1/1) ... [2021-01-06 17:19:53,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (1/1) ... [2021-01-06 17:19:53,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (1/1) ... [2021-01-06 17:19:53,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:19:53,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:19:53,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:19:53,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:19:53,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (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 17:19:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:19:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:19:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:19:53,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:19:53,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:19:53,866 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-01-06 17:19:53,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:19:53 BoogieIcfgContainer [2021-01-06 17:19:53,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:19:53,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:19:53,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:19:53,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:19:53,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:19:52" (1/3) ... [2021-01-06 17:19:53,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355a2370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:19:53, skipping insertion in model container [2021-01-06 17:19:53,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:19:53" (2/3) ... [2021-01-06 17:19:53,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355a2370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:19:53, skipping insertion in model container [2021-01-06 17:19:53,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:19:53" (3/3) ... [2021-01-06 17:19:53,883 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound20.c [2021-01-06 17:19:53,890 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:19:53,896 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2021-01-06 17:19:53,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-01-06 17:19:53,957 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:19:53,958 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:19:53,958 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:19:53,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:19:53,958 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:19:53,958 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:19:53,958 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:19:53,959 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:19:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2021-01-06 17:19:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:19:53,989 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:53,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:53,993 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:54,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:54,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-01-06 17:19:54,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:54,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420101592] [2021-01-06 17:19:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:19:54,221 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 17:19:54,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420101592] [2021-01-06 17:19:54,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:19:54,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:19:54,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508851224] [2021-01-06 17:19:54,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:19:54,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:19:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:19:54,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:19:54,245 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2021-01-06 17:19:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:54,268 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-01-06 17:19:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:19:54,270 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:19:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:54,279 INFO L225 Difference]: With dead ends: 103 [2021-01-06 17:19:54,279 INFO L226 Difference]: Without dead ends: 49 [2021-01-06 17:19:54,283 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 17:19:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-06 17:19:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-01-06 17:19:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-06 17:19:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-01-06 17:19:54,322 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2021-01-06 17:19:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:54,322 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-01-06 17:19:54,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:19:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-01-06 17:19:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:19:54,323 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:54,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:54,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:19:54,323 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:54,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:54,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-01-06 17:19:54,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:54,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377318310] [2021-01-06 17:19:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:19:54,438 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 17:19:54,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377318310] [2021-01-06 17:19:54,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:19:54,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:19:54,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042142729] [2021-01-06 17:19:54,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:19:54,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:19:54,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:19:54,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:19:54,442 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 4 states. [2021-01-06 17:19:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:54,587 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-01-06 17:19:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:19:54,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-06 17:19:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:54,589 INFO L225 Difference]: With dead ends: 50 [2021-01-06 17:19:54,589 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 17:19:54,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:19:54,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 17:19:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-01-06 17:19:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:19:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-01-06 17:19:54,600 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2021-01-06 17:19:54,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:54,600 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-01-06 17:19:54,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:19:54,600 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-01-06 17:19:54,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:19:54,601 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:54,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:54,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:19:54,602 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:54,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:54,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-01-06 17:19:54,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:54,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117162516] [2021-01-06 17:19:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:54,622 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:19:54,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785403934] [2021-01-06 17:19:54,622 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 17:19:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:19:54,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:19:54,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:19:54,770 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 17:19:54,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117162516] [2021-01-06 17:19:54,771 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:19:54,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785403934] [2021-01-06 17:19:54,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:19:54,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:19:54,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337679479] [2021-01-06 17:19:54,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:19:54,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:19:54,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:19:54,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:19:54,774 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 6 states. [2021-01-06 17:19:54,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:54,951 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2021-01-06 17:19:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:19:54,952 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-06 17:19:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:54,953 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:19:54,954 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 17:19:54,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:19:54,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 17:19:54,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2021-01-06 17:19:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:19:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2021-01-06 17:19:54,971 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 9 [2021-01-06 17:19:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:54,971 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2021-01-06 17:19:54,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:19:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2021-01-06 17:19:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:19:54,972 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:54,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:55,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 17:19:55,187 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:55,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:55,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-01-06 17:19:55,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:55,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5980418] [2021-01-06 17:19:55,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:55,205 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:19:55,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535390966] [2021-01-06 17:19:55,206 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 17:19:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:19:55,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:19:55,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:19:55,310 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 17:19:55,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5980418] [2021-01-06 17:19:55,311 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:19:55,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535390966] [2021-01-06 17:19:55,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:19:55,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:19:55,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299191238] [2021-01-06 17:19:55,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:19:55,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:19:55,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:19:55,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:19:55,314 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 6 states. [2021-01-06 17:19:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:55,453 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2021-01-06 17:19:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:19:55,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 17:19:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:55,455 INFO L225 Difference]: With dead ends: 78 [2021-01-06 17:19:55,455 INFO L226 Difference]: Without dead ends: 74 [2021-01-06 17:19:55,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:19:55,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-06 17:19:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2021-01-06 17:19:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:19:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-01-06 17:19:55,467 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 11 [2021-01-06 17:19:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:55,467 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-01-06 17:19:55,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:19:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-01-06 17:19:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:19:55,468 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:55,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:55,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:19:55,683 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:55,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:55,684 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2021-01-06 17:19:55,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:55,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316605407] [2021-01-06 17:19:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:55,701 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:19:55,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918221698] [2021-01-06 17:19:55,701 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 17:19:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:19:55,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:19:55,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:19:55,820 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 17:19:55,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316605407] [2021-01-06 17:19:55,821 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:19:55,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918221698] [2021-01-06 17:19:55,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:19:55,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:19:55,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942548791] [2021-01-06 17:19:55,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:19:55,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:19:55,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:19:55,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:19:55,824 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 6 states. [2021-01-06 17:19:56,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:56,010 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-01-06 17:19:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:19:56,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-01-06 17:19:56,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:56,012 INFO L225 Difference]: With dead ends: 75 [2021-01-06 17:19:56,012 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 17:19:56,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:19:56,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 17:19:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-01-06 17:19:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 17:19:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-01-06 17:19:56,021 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2021-01-06 17:19:56,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:56,021 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-01-06 17:19:56,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:19:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-01-06 17:19:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:19:56,022 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:56,022 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:56,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:19:56,237 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:56,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:56,238 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2021-01-06 17:19:56,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:56,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489245836] [2021-01-06 17:19:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:56,251 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:19:56,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243109103] [2021-01-06 17:19:56,252 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 17:19:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:19:56,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:19:56,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:19:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:19:56,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489245836] [2021-01-06 17:19:56,424 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:19:56,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243109103] [2021-01-06 17:19:56,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:19:56,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:19:56,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431989161] [2021-01-06 17:19:56,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:19:56,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:19:56,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:19:56,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:19:56,429 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 7 states. [2021-01-06 17:19:56,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:56,623 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2021-01-06 17:19:56,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:19:56,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-06 17:19:56,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:56,625 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:19:56,625 INFO L226 Difference]: Without dead ends: 92 [2021-01-06 17:19:56,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:19:56,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-06 17:19:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2021-01-06 17:19:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 17:19:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2021-01-06 17:19:56,636 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 20 [2021-01-06 17:19:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:56,637 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2021-01-06 17:19:56,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:19:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2021-01-06 17:19:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:19:56,638 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:56,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:56,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:19:56,852 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:56,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:56,853 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2021-01-06 17:19:56,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:56,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904266285] [2021-01-06 17:19:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:56,868 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:19:56,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941283742] [2021-01-06 17:19:56,868 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 17:19:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:19:56,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:19:56,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:19:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:19:57,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904266285] [2021-01-06 17:19:57,050 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:19:57,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941283742] [2021-01-06 17:19:57,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:19:57,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:19:57,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403268318] [2021-01-06 17:19:57,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:19:57,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:19:57,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:19:57,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:19:57,053 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2021-01-06 17:19:57,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:57,207 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-01-06 17:19:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:19:57,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-01-06 17:19:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:57,208 INFO L225 Difference]: With dead ends: 91 [2021-01-06 17:19:57,208 INFO L226 Difference]: Without dead ends: 81 [2021-01-06 17:19:57,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:19:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-06 17:19:57,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2021-01-06 17:19:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:19:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2021-01-06 17:19:57,218 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 22 [2021-01-06 17:19:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:57,218 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2021-01-06 17:19:57,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:19:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2021-01-06 17:19:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:19:57,219 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:57,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:57,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:19:57,435 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:57,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:57,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2021-01-06 17:19:57,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:57,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276794075] [2021-01-06 17:19:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:57,451 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:19:57,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839950969] [2021-01-06 17:19:57,452 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 17:19:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:19:57,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 17:19:57,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:19:57,653 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:19:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:19:57,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276794075] [2021-01-06 17:19:57,673 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:19:57,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839950969] [2021-01-06 17:19:57,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:19:57,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:19:57,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32961714] [2021-01-06 17:19:57,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:19:57,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:19:57,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:19:57,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:19:57,676 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 8 states. [2021-01-06 17:19:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:58,088 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-01-06 17:19:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:19:58,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:19:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:58,090 INFO L225 Difference]: With dead ends: 81 [2021-01-06 17:19:58,090 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 17:19:58,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:19:58,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 17:19:58,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2021-01-06 17:19:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:19:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2021-01-06 17:19:58,099 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2021-01-06 17:19:58,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:58,099 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2021-01-06 17:19:58,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:19:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2021-01-06 17:19:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:19:58,101 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:58,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:58,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:19:58,316 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:58,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2021-01-06 17:19:58,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:58,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158309843] [2021-01-06 17:19:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:58,338 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:19:58,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852277578] [2021-01-06 17:19:58,338 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 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 17:19:58,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:19:58,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:19:58,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:19:58,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:19:58,509 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 17:19:58,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158309843] [2021-01-06 17:19:58,509 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:19:58,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852277578] [2021-01-06 17:19:58,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:19:58,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:19:58,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488794808] [2021-01-06 17:19:58,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:19:58,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:19:58,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:19:58,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:19:58,512 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 8 states. [2021-01-06 17:19:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:58,765 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2021-01-06 17:19:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:19:58,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:19:58,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:58,767 INFO L225 Difference]: With dead ends: 121 [2021-01-06 17:19:58,767 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 17:19:58,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:19:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 17:19:58,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2021-01-06 17:19:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 17:19:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2021-01-06 17:19:58,778 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 31 [2021-01-06 17:19:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:58,778 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2021-01-06 17:19:58,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:19:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2021-01-06 17:19:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:19:58,779 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:58,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:58,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:19:58,994 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:58,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:58,995 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2021-01-06 17:19:58,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:58,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628312303] [2021-01-06 17:19:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:59,009 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:19:59,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402590027] [2021-01-06 17:19:59,009 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 17:19:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:19:59,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:19:59,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:19:59,203 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:19:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:19:59,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628312303] [2021-01-06 17:19:59,222 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:19:59,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402590027] [2021-01-06 17:19:59,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:19:59,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:19:59,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288715523] [2021-01-06 17:19:59,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:19:59,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:19:59,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:19:59,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:19:59,224 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 8 states. [2021-01-06 17:19:59,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:59,608 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2021-01-06 17:19:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:19:59,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2021-01-06 17:19:59,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:59,609 INFO L225 Difference]: With dead ends: 100 [2021-01-06 17:19:59,610 INFO L226 Difference]: Without dead ends: 98 [2021-01-06 17:19:59,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:19:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-06 17:19:59,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-01-06 17:19:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 17:19:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2021-01-06 17:19:59,620 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2021-01-06 17:19:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:59,621 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2021-01-06 17:19:59,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:19:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2021-01-06 17:19:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:19:59,622 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:59,622 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:59,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:19:59,827 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:59,828 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2021-01-06 17:19:59,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:59,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473516086] [2021-01-06 17:19:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:59,839 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:19:59,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045003483] [2021-01-06 17:19:59,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:19:59,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:19:59,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:19:59,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-06 17:19:59,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:20:00,081 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 17:20:00,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473516086] [2021-01-06 17:20:00,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:20:00,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045003483] [2021-01-06 17:20:00,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:20:00,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:20:00,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752121512] [2021-01-06 17:20:00,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:20:00,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:20:00,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:20:00,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:20:00,090 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 10 states. [2021-01-06 17:20:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:20:00,362 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2021-01-06 17:20:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:20:00,363 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2021-01-06 17:20:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:20:00,364 INFO L225 Difference]: With dead ends: 111 [2021-01-06 17:20:00,364 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 17:20:00,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:20:00,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 17:20:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2021-01-06 17:20:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 17:20:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2021-01-06 17:20:00,372 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 33 [2021-01-06 17:20:00,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:20:00,373 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2021-01-06 17:20:00,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:20:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2021-01-06 17:20:00,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:20:00,374 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:20:00,374 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:20:00,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:20:00,589 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:20:00,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:20:00,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2021-01-06 17:20:00,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:20:00,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348937721] [2021-01-06 17:20:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:20:00,606 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:20:00,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979951649] [2021-01-06 17:20:00,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:20:00,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:20:00,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:20:00,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:20:00,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:20:00,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:20:00,861 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 17:20:00,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348937721] [2021-01-06 17:20:00,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:20:00,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979951649] [2021-01-06 17:20:00,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:20:00,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:20:00,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746792350] [2021-01-06 17:20:00,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:20:00,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:20:00,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:20:00,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:20:00,863 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 8 states. [2021-01-06 17:20:01,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:20:01,082 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-01-06 17:20:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:20:01,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2021-01-06 17:20:01,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:20:01,084 INFO L225 Difference]: With dead ends: 88 [2021-01-06 17:20:01,084 INFO L226 Difference]: Without dead ends: 86 [2021-01-06 17:20:01,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:20:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-01-06 17:20:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-01-06 17:20:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 17:20:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2021-01-06 17:20:01,092 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 42 [2021-01-06 17:20:01,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:20:01,092 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2021-01-06 17:20:01,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:20:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2021-01-06 17:20:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:20:01,093 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:20:01,093 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:20:01,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:20:01,307 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:20:01,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:20:01,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370537, now seen corresponding path program 3 times [2021-01-06 17:20:01,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:20:01,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681880277] [2021-01-06 17:20:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:20:01,320 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:20:01,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872384685] [2021-01-06 17:20:01,320 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 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 17:20:01,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:20:01,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:20:01,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:20:01,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:20:01,525 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:20:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-01-06 17:20:01,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681880277] [2021-01-06 17:20:01,730 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:20:01,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872384685] [2021-01-06 17:20:01,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:20:01,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:20:01,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793996537] [2021-01-06 17:20:01,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:20:01,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:20:01,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:20:01,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:20:01,732 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 8 states. [2021-01-06 17:20:17,083 WARN L197 SmtUtils]: Spent 14.85 s on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-01-06 17:20:27,589 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 36 [2021-01-06 17:20:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:20:57,868 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-01-06 17:20:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:20:57,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2021-01-06 17:20:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:20:57,870 INFO L225 Difference]: With dead ends: 84 [2021-01-06 17:20:57,870 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 17:20:57,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:20:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 17:20:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-01-06 17:20:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 17:20:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2021-01-06 17:20:57,883 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 42 [2021-01-06 17:20:57,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:20:57,884 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2021-01-06 17:20:57,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:20:57,884 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2021-01-06 17:20:57,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:20:57,885 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:20:57,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:20:58,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:20:58,089 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:20:58,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:20:58,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1899544187, now seen corresponding path program 2 times [2021-01-06 17:20:58,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:20:58,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265415148] [2021-01-06 17:20:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:20:58,101 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:20:58,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46872373] [2021-01-06 17:20:58,101 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 17:20:59,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:20:59,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:20:59,072 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-06 17:20:59,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:20:59,204 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-01-06 17:21:01,496 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (= c_ULTIMATE.start_main_~z~0 (+ (* 6 c_ULTIMATE.start_main_~n~0) 6)) (let ((.cse0 (= (+ (* 12 c_ULTIMATE.start_main_~y~0) (* 18 c_ULTIMATE.start_main_~x~0) 6) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0) (* 2 c_ULTIMATE.start_main_~z~0))))) (or (and .cse0 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)))) (<= 0 c_ULTIMATE.start_main_~a~0) (= c_ULTIMATE.start_main_~y~0 (+ (* 3 c_ULTIMATE.start_main_~n~0) (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) 1)) (<= c_ULTIMATE.start_main_~a~0 20)) is different from false [2021-01-06 17:21:10,430 WARN L197 SmtUtils]: Spent 6.88 s on a formula simplification that was a NOOP. DAG size: 33 [2021-01-06 17:21:54,173 WARN L197 SmtUtils]: Spent 35.52 s on a formula simplification that was a NOOP. DAG size: 45 [2021-01-06 17:22:12,359 WARN L197 SmtUtils]: Spent 12.09 s on a formula simplification that was a NOOP. DAG size: 38 [2021-01-06 17:22:29,586 WARN L197 SmtUtils]: Spent 10.79 s on a formula simplification that was a NOOP. DAG size: 39 [2021-01-06 17:22:47,443 WARN L197 SmtUtils]: Spent 10.13 s on a formula simplification that was a NOOP. DAG size: 44