/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_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:16:57,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:16:57,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:16:57,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:16:57,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:16:57,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:16:57,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:16:57,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:16:57,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:16:57,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:16:57,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:16:57,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:16:57,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:16:57,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:16:57,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:16:57,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:16:57,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:16:57,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:16:57,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:16:57,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:16:57,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:16:57,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:16:57,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:16:57,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:16:57,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:16:57,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:16:57,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:16:57,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:16:57,239 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 17:16:57,282 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:16:57,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:16:57,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:16:57,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:16:57,286 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:16:57,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:16:57,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:16:57,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:16:57,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:16:57,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:16:57,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:16:57,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:16:57,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:16:57,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:16:57,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:16:57,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:16:57,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:16:57,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:16:57,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:16:57,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:16:57,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:16:57,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:16:57,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:16:57,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:16:57,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:16:57,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:16:57,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:16:57,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:16:57,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:16:57,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:16:57,745 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:16:57,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c [2021-01-06 17:16:57,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f76ed2ba8/e42a126a40c24b31a0b3376120550bbc/FLAG8eca03822 [2021-01-06 17:16:58,436 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:16:58,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c [2021-01-06 17:16:58,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f76ed2ba8/e42a126a40c24b31a0b3376120550bbc/FLAG8eca03822 [2021-01-06 17:16:58,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f76ed2ba8/e42a126a40c24b31a0b3376120550bbc [2021-01-06 17:16:58,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:16:58,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:16:58,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:16:58,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:16:58,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:16:58,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:16:58" (1/1) ... [2021-01-06 17:16:58,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e2114b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:58, skipping insertion in model container [2021-01-06 17:16:58,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:16:58" (1/1) ... [2021-01-06 17:16:58,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:16:58,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:16:58,975 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_unwindbound50.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 17:16:59,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:16:59,011 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:16:59,025 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_unwindbound50.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 17:16:59,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:16:59,056 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:16:59,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59 WrapperNode [2021-01-06 17:16:59,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:16:59,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:16:59,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:16:59,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:16:59,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (1/1) ... [2021-01-06 17:16:59,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (1/1) ... [2021-01-06 17:16:59,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:16:59,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:16:59,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:16:59,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:16:59,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (1/1) ... [2021-01-06 17:16:59,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (1/1) ... [2021-01-06 17:16:59,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (1/1) ... [2021-01-06 17:16:59,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (1/1) ... [2021-01-06 17:16:59,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (1/1) ... [2021-01-06 17:16:59,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (1/1) ... [2021-01-06 17:16:59,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (1/1) ... [2021-01-06 17:16:59,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:16:59,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:16:59,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:16:59,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:16:59,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (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 17:16:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:16:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:16:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:16:59,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:16:59,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:16:59,780 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-01-06 17:16:59,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:16:59 BoogieIcfgContainer [2021-01-06 17:16:59,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:16:59,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:16:59,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:16:59,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:16:59,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:16:58" (1/3) ... [2021-01-06 17:16:59,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378747a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:16:59, skipping insertion in model container [2021-01-06 17:16:59,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:59" (2/3) ... [2021-01-06 17:16:59,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378747a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:16:59, skipping insertion in model container [2021-01-06 17:16:59,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:16:59" (3/3) ... [2021-01-06 17:16:59,792 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound50.c [2021-01-06 17:16:59,799 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:16:59,805 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2021-01-06 17:16:59,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-01-06 17:16:59,854 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:16:59,854 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:16:59,854 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:16:59,855 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:16:59,855 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:16:59,855 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:16:59,855 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:16:59,855 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:16:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2021-01-06 17:16:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:16:59,880 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:59,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:16:59,881 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 17:16:59,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:59,888 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:16:59,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:59,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328410126] [2021-01-06 17:16:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:00,149 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 17:17:00,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328410126] [2021-01-06 17:17:00,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:17:00,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:17:00,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918773092] [2021-01-06 17:17:00,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:17:00,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:00,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:17:00,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:17:00,176 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2021-01-06 17:17:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:00,419 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-01-06 17:17:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:17:00,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-06 17:17:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:00,430 INFO L225 Difference]: With dead ends: 101 [2021-01-06 17:17:00,431 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 17:17:00,434 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 17:17:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 17:17:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-01-06 17:17:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-01-06 17:17:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-01-06 17:17:00,475 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2021-01-06 17:17:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:00,475 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-01-06 17:17:00,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:17:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-01-06 17:17:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:17:00,476 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:00,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:00,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:17:00,477 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 17:17:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-01-06 17:17:00,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:00,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877147178] [2021-01-06 17:17:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:00,495 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:00,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81889454] [2021-01-06 17:17:00,496 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 17:17:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:00,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:17:00,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:00,657 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 17:17:00,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877147178] [2021-01-06 17:17:00,658 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:00,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81889454] [2021-01-06 17:17:00,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:17:00,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:17:00,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181719692] [2021-01-06 17:17:00,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:17:00,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:00,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:17:00,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:17:00,661 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2021-01-06 17:17:00,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:00,838 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2021-01-06 17:17:00,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:17:00,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 17:17:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:00,841 INFO L225 Difference]: With dead ends: 90 [2021-01-06 17:17:00,841 INFO L226 Difference]: Without dead ends: 82 [2021-01-06 17:17:00,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-06 17:17:00,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2021-01-06 17:17:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:17:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-01-06 17:17:00,856 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 8 [2021-01-06 17:17:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:00,856 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-01-06 17:17:00,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:17:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-01-06 17:17:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:17:00,857 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:00,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:01,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:17:01,073 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 17:17:01,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:01,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2021-01-06 17:17:01,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:01,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57951843] [2021-01-06 17:17:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:01,110 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 17:17:01,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57951843] [2021-01-06 17:17:01,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:17:01,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:17:01,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423221245] [2021-01-06 17:17:01,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:17:01,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:01,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:17:01,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:17:01,113 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 4 states. [2021-01-06 17:17:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:01,130 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2021-01-06 17:17:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:17:01,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 17:17:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:01,132 INFO L225 Difference]: With dead ends: 84 [2021-01-06 17:17:01,132 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:17:01,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:17:01,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:17:01,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-01-06 17:17:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:17:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-01-06 17:17:01,143 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 9 [2021-01-06 17:17:01,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:01,143 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-01-06 17:17:01,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:17:01,144 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-01-06 17:17:01,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:17:01,144 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:01,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:01,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:17:01,145 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 17:17:01,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:01,145 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-01-06 17:17:01,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:01,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955525225] [2021-01-06 17:17:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:01,157 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:01,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908603702] [2021-01-06 17:17:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 17:17:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:01,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:17:01,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:01,280 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 17:17:01,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955525225] [2021-01-06 17:17:01,281 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:01,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908603702] [2021-01-06 17:17:01,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:17:01,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:17:01,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903612977] [2021-01-06 17:17:01,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:17:01,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:01,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:17:01,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:17:01,285 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 6 states. [2021-01-06 17:17:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:01,411 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-01-06 17:17:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:17:01,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:17:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:01,413 INFO L225 Difference]: With dead ends: 78 [2021-01-06 17:17:01,414 INFO L226 Difference]: Without dead ends: 74 [2021-01-06 17:17:01,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-06 17:17:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2021-01-06 17:17:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:17:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-01-06 17:17:01,425 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 10 [2021-01-06 17:17:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:01,425 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-01-06 17:17:01,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:17:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-01-06 17:17:01,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:17:01,426 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:01,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:01,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:01,643 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 17:17:01,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2021-01-06 17:17:01,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:01,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661996154] [2021-01-06 17:17:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:01,659 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:01,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465487805] [2021-01-06 17:17:01,660 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 17:17:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:01,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:17:01,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:01,772 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 17:17:01,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661996154] [2021-01-06 17:17:01,773 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:01,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465487805] [2021-01-06 17:17:01,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:17:01,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:17:01,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753235148] [2021-01-06 17:17:01,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:17:01,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:01,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:17:01,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:17:01,776 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2021-01-06 17:17:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:01,904 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2021-01-06 17:17:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:17:01,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 17:17:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:01,906 INFO L225 Difference]: With dead ends: 77 [2021-01-06 17:17:01,906 INFO L226 Difference]: Without dead ends: 59 [2021-01-06 17:17:01,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:01,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-06 17:17:01,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-01-06 17:17:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 17:17:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-01-06 17:17:01,914 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2021-01-06 17:17:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:01,915 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-01-06 17:17:01,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:17:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-01-06 17:17:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:17:01,916 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:01,916 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:02,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:02,133 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 17:17:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:02,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2021-01-06 17:17:02,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:02,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577959440] [2021-01-06 17:17:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:02,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:02,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195473184] [2021-01-06 17:17:02,148 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 17:17:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:02,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:17:02,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:02,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577959440] [2021-01-06 17:17:02,311 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:02,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195473184] [2021-01-06 17:17:02,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:02,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:17:02,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032816841] [2021-01-06 17:17:02,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:17:02,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:02,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:17:02,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:02,314 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 7 states. [2021-01-06 17:17:02,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:02,500 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2021-01-06 17:17:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:17:02,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-06 17:17:02,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:02,502 INFO L225 Difference]: With dead ends: 101 [2021-01-06 17:17:02,502 INFO L226 Difference]: Without dead ends: 95 [2021-01-06 17:17:02,503 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 17:17:02,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-01-06 17:17:02,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2021-01-06 17:17:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 17:17:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-01-06 17:17:02,515 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 20 [2021-01-06 17:17:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:02,515 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-01-06 17:17:02,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:17:02,516 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-01-06 17:17:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 17:17:02,517 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:02,517 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:02,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:02,732 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 17:17:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:02,733 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2021-01-06 17:17:02,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:02,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665560183] [2021-01-06 17:17:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:02,746 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:02,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654518840] [2021-01-06 17:17:02,747 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 17:17:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:02,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:17:02,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:02,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665560183] [2021-01-06 17:17:02,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:02,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654518840] [2021-01-06 17:17:02,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:02,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:17:02,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402786208] [2021-01-06 17:17:02,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:17:02,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:02,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:17:02,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:17:02,863 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 5 states. [2021-01-06 17:17:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:02,904 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2021-01-06 17:17:02,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:17:02,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-01-06 17:17:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:02,907 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:17:02,907 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 17:17:02,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:17:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 17:17:02,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-01-06 17:17:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 17:17:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2021-01-06 17:17:02,933 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 21 [2021-01-06 17:17:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:02,934 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2021-01-06 17:17:02,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:17:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2021-01-06 17:17:02,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:17:02,935 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:02,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:03,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:17:03,139 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 17:17:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:03,140 INFO L82 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2021-01-06 17:17:03,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:03,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483567572] [2021-01-06 17:17:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:03,154 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:03,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671515566] [2021-01-06 17:17:03,155 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 17:17:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:03,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:17:03,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:03,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483567572] [2021-01-06 17:17:03,320 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:03,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671515566] [2021-01-06 17:17:03,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:03,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:17:03,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642935963] [2021-01-06 17:17:03,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:17:03,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:03,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:17:03,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:03,323 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 7 states. [2021-01-06 17:17:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:03,518 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2021-01-06 17:17:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:17:03,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-01-06 17:17:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:03,519 INFO L225 Difference]: With dead ends: 92 [2021-01-06 17:17:03,519 INFO L226 Difference]: Without dead ends: 82 [2021-01-06 17:17:03,520 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 17:17:03,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-06 17:17:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2021-01-06 17:17:03,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 17:17:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-01-06 17:17:03,529 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 22 [2021-01-06 17:17:03,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:03,530 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-01-06 17:17:03,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:17:03,530 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-01-06 17:17:03,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:17:03,531 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:03,531 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:03,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:03,746 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 17:17:03,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:03,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2021-01-06 17:17:03,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:03,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102867549] [2021-01-06 17:17:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:03,763 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:03,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634043035] [2021-01-06 17:17:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:03,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:17:03,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:04,087 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:04,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102867549] [2021-01-06 17:17:04,114 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:04,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634043035] [2021-01-06 17:17:04,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:04,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:17:04,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386106483] [2021-01-06 17:17:04,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:17:04,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:04,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:17:04,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:17:04,116 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 8 states. [2021-01-06 17:17:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:04,427 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-01-06 17:17:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:17:04,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:17:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:04,429 INFO L225 Difference]: With dead ends: 82 [2021-01-06 17:17:04,429 INFO L226 Difference]: Without dead ends: 80 [2021-01-06 17:17:04,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:17:04,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-06 17:17:04,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2021-01-06 17:17:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 17:17:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-01-06 17:17:04,442 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 31 [2021-01-06 17:17:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:04,442 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-01-06 17:17:04,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:17:04,442 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-01-06 17:17:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:17:04,443 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:04,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 17:17:04,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:04,658 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 17:17:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:04,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2021-01-06 17:17:04,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:04,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262617849] [2021-01-06 17:17:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:04,672 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:04,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471516481] [2021-01-06 17:17:04,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:04,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:17:04,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:04,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:17:04,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:04,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262617849] [2021-01-06 17:17:04,920 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:04,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471516481] [2021-01-06 17:17:04,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:04,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:17:04,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969262160] [2021-01-06 17:17:04,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:17:04,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:04,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:17:04,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:04,923 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 7 states. [2021-01-06 17:17:05,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:05,116 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2021-01-06 17:17:05,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:17:05,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-01-06 17:17:05,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:05,119 INFO L225 Difference]: With dead ends: 123 [2021-01-06 17:17:05,119 INFO L226 Difference]: Without dead ends: 121 [2021-01-06 17:17:05,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:17:05,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-01-06 17:17:05,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 81. [2021-01-06 17:17:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:17:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-01-06 17:17:05,148 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 32 [2021-01-06 17:17:05,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:05,148 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-01-06 17:17:05,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:17:05,149 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-01-06 17:17:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:17:05,151 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:05,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:05,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:17:05,354 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 17:17:05,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:05,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2021-01-06 17:17:05,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:05,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907485084] [2021-01-06 17:17:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:05,375 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:05,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227023851] [2021-01-06 17:17:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:05,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:17:05,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:05,583 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:05,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907485084] [2021-01-06 17:17:05,599 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:05,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227023851] [2021-01-06 17:17:05,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:05,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:17:05,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132834752] [2021-01-06 17:17:05,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:17:05,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:05,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:17:05,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:17:05,601 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 8 states. [2021-01-06 17:17:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:05,816 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-01-06 17:17:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:17:05,817 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2021-01-06 17:17:05,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:05,818 INFO L225 Difference]: With dead ends: 86 [2021-01-06 17:17:05,818 INFO L226 Difference]: Without dead ends: 84 [2021-01-06 17:17:05,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:17:05,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-06 17:17:05,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2021-01-06 17:17:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:17:05,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2021-01-06 17:17:05,826 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 33 [2021-01-06 17:17:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:05,826 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2021-01-06 17:17:05,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:17:05,826 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2021-01-06 17:17:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:17:05,827 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:05,828 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:06,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:06,042 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 17:17:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:06,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2021-01-06 17:17:06,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:06,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793357691] [2021-01-06 17:17:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:06,054 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:06,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713819494] [2021-01-06 17:17:06,054 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 17:17:06,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:17:06,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:06,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:17:06,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:06,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793357691] [2021-01-06 17:17:06,202 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:06,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713819494] [2021-01-06 17:17:06,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:06,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:17:06,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845017489] [2021-01-06 17:17:06,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:17:06,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:06,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:17:06,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:17:06,209 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 6 states. [2021-01-06 17:17:06,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:06,249 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2021-01-06 17:17:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:17:06,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-01-06 17:17:06,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:06,253 INFO L225 Difference]: With dead ends: 105 [2021-01-06 17:17:06,253 INFO L226 Difference]: Without dead ends: 83 [2021-01-06 17:17:06,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:17:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-01-06 17:17:06,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-01-06 17:17:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:17:06,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2021-01-06 17:17:06,264 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 33 [2021-01-06 17:17:06,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:06,264 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2021-01-06 17:17:06,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:17:06,265 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2021-01-06 17:17:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:17:06,269 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:06,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 17:17:06,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:06,483 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 17:17:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:06,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1367719072, now seen corresponding path program 2 times [2021-01-06 17:17:06,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:06,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519430886] [2021-01-06 17:17:06,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:06,494 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:06,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19638737] [2021-01-06 17:17:06,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:06,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:17:06,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:06,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:17:06,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:06,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519430886] [2021-01-06 17:17:06,742 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:06,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19638737] [2021-01-06 17:17:06,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:06,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:17:06,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065949565] [2021-01-06 17:17:06,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:17:06,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:06,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:17:06,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:17:06,744 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 9 states. [2021-01-06 17:17:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:07,014 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2021-01-06 17:17:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:17:07,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2021-01-06 17:17:07,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:07,015 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:17:07,015 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 17:17:07,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:17:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 17:17:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 75. [2021-01-06 17:17:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:17:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-01-06 17:17:07,024 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 34 [2021-01-06 17:17:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:07,024 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-01-06 17:17:07,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:17:07,025 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-01-06 17:17:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:17:07,025 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:07,025 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 17:17:07,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:17:07,239 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 17:17:07,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:07,240 INFO L82 PathProgramCache]: Analyzing trace with hash 118191875, now seen corresponding path program 1 times [2021-01-06 17:17:07,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:07,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617327358] [2021-01-06 17:17:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:07,250 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:07,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999601966] [2021-01-06 17:17:07,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:07,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:17:07,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:07,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617327358] [2021-01-06 17:17:07,442 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:07,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999601966] [2021-01-06 17:17:07,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:07,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:17:07,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297042824] [2021-01-06 17:17:07,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:17:07,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:07,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:17:07,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:07,445 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 7 states. [2021-01-06 17:17:07,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:07,637 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2021-01-06 17:17:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:17:07,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2021-01-06 17:17:07,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:07,639 INFO L225 Difference]: With dead ends: 109 [2021-01-06 17:17:07,639 INFO L226 Difference]: Without dead ends: 93 [2021-01-06 17:17:07,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:17:07,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-06 17:17:07,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2021-01-06 17:17:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 17:17:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2021-01-06 17:17:07,647 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 36 [2021-01-06 17:17:07,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:07,648 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2021-01-06 17:17:07,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:17:07,648 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2021-01-06 17:17:07,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 17:17:07,649 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:07,649 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:07,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:17:07,863 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:07,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:07,864 INFO L82 PathProgramCache]: Analyzing trace with hash -230259065, now seen corresponding path program 2 times [2021-01-06 17:17:07,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:07,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484173162] [2021-01-06 17:17:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:07,873 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:07,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253971562] [2021-01-06 17:17:07,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:07,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:17:07,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:07,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:17:07,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:08,102 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:08,262 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:08,265 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:17:08,267 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:17:08,270 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:08,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484173162] [2021-01-06 17:17:08,294 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:08,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253971562] [2021-01-06 17:17:08,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:08,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:17:08,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715484854] [2021-01-06 17:17:08,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:17:08,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:08,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:17:08,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:17:08,297 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 11 states. [2021-01-06 17:17:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:08,795 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2021-01-06 17:17:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:17:08,796 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2021-01-06 17:17:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:08,796 INFO L225 Difference]: With dead ends: 90 [2021-01-06 17:17:08,797 INFO L226 Difference]: Without dead ends: 88 [2021-01-06 17:17:08,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:17:08,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-06 17:17:08,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-01-06 17:17:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 17:17:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2021-01-06 17:17:08,805 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 43 [2021-01-06 17:17:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:08,805 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2021-01-06 17:17:08,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:17:08,806 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2021-01-06 17:17:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:17:08,806 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:08,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-01-06 17:17:09,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:17:09,021 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:09,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:09,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1212527061, now seen corresponding path program 3 times [2021-01-06 17:17:09,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:09,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133933509] [2021-01-06 17:17:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:09,033 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:09,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572146172] [2021-01-06 17:17:09,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:09,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:17:09,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:09,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:17:09,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:11,528 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)))) (and (= (+ (* 6 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (* 8 c_ULTIMATE.start_main_~y~0) .cse0 (* 18 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0))) (+ (* 6 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~n~0)) (* 12 c_ULTIMATE.start_main_~n~0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* 9 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) 7)) (let ((.cse1 (= c_ULTIMATE.start_main_~y~0 (+ (* 3 c_ULTIMATE.start_main_~n~0) .cse0 1)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)))))) is different from true [2021-01-06 17:17:20,981 WARN L197 SmtUtils]: Spent 3.22 s on a formula simplification that was a NOOP. DAG size: 30 [2021-01-06 17:17:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-06 17:17:21,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133933509] [2021-01-06 17:17:21,026 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:21,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572146172] [2021-01-06 17:17:21,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:21,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:17:21,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109227409] [2021-01-06 17:17:21,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:17:21,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:21,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:17:21,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=4, NotChecked=14, Total=90 [2021-01-06 17:17:21,028 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 10 states. [2021-01-06 17:17:27,898 WARN L197 SmtUtils]: Spent 6.85 s on a formula simplification that was a NOOP. DAG size: 41 [2021-01-06 17:17:40,896 WARN L197 SmtUtils]: Spent 12.97 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-06 17:17:53,523 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2021-01-06 17:18:22,216 WARN L197 SmtUtils]: Spent 18.83 s on a formula simplification that was a NOOP. DAG size: 49 [2021-01-06 17:18:39,616 WARN L197 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-01-06 17:19:03,680 WARN L197 SmtUtils]: Spent 6.49 s on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2021-01-06 17:19:14,409 WARN L197 SmtUtils]: Spent 4.54 s on a formula simplification that was a NOOP. DAG size: 23 [2021-01-06 17:20:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:20:13,517 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2021-01-06 17:20:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:20:13,518 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2021-01-06 17:20:13,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:20:13,520 INFO L225 Difference]: With dead ends: 106 [2021-01-06 17:20:13,520 INFO L226 Difference]: Without dead ends: 102 [2021-01-06 17:20:13,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 84.4s TimeCoverageRelationStatistics Valid=80, Invalid=182, Unknown=14, NotChecked=30, Total=306 [2021-01-06 17:20:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-06 17:20:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2021-01-06 17:20:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 17:20:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2021-01-06 17:20:13,537 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 44 [2021-01-06 17:20:13,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:20:13,537 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2021-01-06 17:20:13,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:20:13,538 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2021-01-06 17:20:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:20:13,538 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:20:13,538 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:20:13,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:20:13,739 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:20:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:20:13,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2059495850, now seen corresponding path program 2 times [2021-01-06 17:20:13,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:20:13,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940003440] [2021-01-06 17:20:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:20:13,749 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:20:13,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108636336] [2021-01-06 17:20:13,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true