/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/dijkstra-u_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:23:27,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:23:27,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:23:28,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:23:28,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:23:28,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:23:28,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:23:28,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:23:28,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:23:28,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:23:28,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:23:28,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:23:28,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:23:28,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:23:28,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:23:28,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:23:28,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:23:28,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:23:28,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:23:28,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:23:28,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:23:28,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:23:28,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:23:28,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:23:28,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:23:28,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:23:28,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:23:28,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:23:28,120 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 17:23:28,172 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:23:28,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:23:28,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:23:28,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:23:28,177 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:23:28,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:23:28,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:23:28,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:23:28,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:23:28,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:23:28,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:23:28,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:23:28,180 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:23:28,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:23:28,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:23:28,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:23:28,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:23:28,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:23:28,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:23:28,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:23:28,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:23:28,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:23:28,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:23:28,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:23:28,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:23:28,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:23:28,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:23:28,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:23:28,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:23:28,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:23:28,632 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:23:28,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound50.c [2021-01-06 17:23:28,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7b5c2ef28/5482a6f3bef24e20bf5359d69a3eea37/FLAGd0a503351 [2021-01-06 17:23:29,456 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:23:29,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound50.c [2021-01-06 17:23:29,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7b5c2ef28/5482a6f3bef24e20bf5359d69a3eea37/FLAGd0a503351 [2021-01-06 17:23:29,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7b5c2ef28/5482a6f3bef24e20bf5359d69a3eea37 [2021-01-06 17:23:29,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:23:29,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:23:29,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:23:29,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:23:29,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:23:29,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:23:29" (1/1) ... [2021-01-06 17:23:29,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b089fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:29, skipping insertion in model container [2021-01-06 17:23:29,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:23:29" (1/1) ... [2021-01-06 17:23:29,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:23:29,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:23:30,035 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/dijkstra-u_unwindbound50.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:23:30,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:23:30,091 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:23:30,112 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/dijkstra-u_unwindbound50.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:23:30,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:23:30,154 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:23:30,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30 WrapperNode [2021-01-06 17:23:30,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:23:30,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:23:30,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:23:30,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:23:30,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (1/1) ... [2021-01-06 17:23:30,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (1/1) ... [2021-01-06 17:23:30,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:23:30,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:23:30,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:23:30,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:23:30,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (1/1) ... [2021-01-06 17:23:30,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (1/1) ... [2021-01-06 17:23:30,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (1/1) ... [2021-01-06 17:23:30,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (1/1) ... [2021-01-06 17:23:30,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (1/1) ... [2021-01-06 17:23:30,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (1/1) ... [2021-01-06 17:23:30,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (1/1) ... [2021-01-06 17:23:30,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:23:30,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:23:30,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:23:30,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:23:30,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (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 17:23:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:23:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:23:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:23:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:23:32,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:23:32,887 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-01-06 17:23:32,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:23:32 BoogieIcfgContainer [2021-01-06 17:23:32,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:23:32,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:23:32,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:23:32,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:23:32,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:23:29" (1/3) ... [2021-01-06 17:23:32,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e01dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:23:32, skipping insertion in model container [2021-01-06 17:23:32,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:30" (2/3) ... [2021-01-06 17:23:32,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e01dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:23:32, skipping insertion in model container [2021-01-06 17:23:32,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:23:32" (3/3) ... [2021-01-06 17:23:32,900 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound50.c [2021-01-06 17:23:32,907 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:23:32,913 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2021-01-06 17:23:32,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-01-06 17:23:32,966 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:23:32,966 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:23:32,967 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:23:32,967 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:23:32,967 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:23:32,967 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:23:32,967 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:23:32,967 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:23:32,987 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2021-01-06 17:23:32,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:23:32,993 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:32,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:32,995 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:33,002 INFO L82 PathProgramCache]: Analyzing trace with hash -578123657, now seen corresponding path program 1 times [2021-01-06 17:23:33,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:33,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560381256] [2021-01-06 17:23:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:33,190 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 17:23:33,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560381256] [2021-01-06 17:23:33,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:33,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:23:33,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713433143] [2021-01-06 17:23:33,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:23:33,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:33,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:23:33,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:23:33,221 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2021-01-06 17:23:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:33,248 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2021-01-06 17:23:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:23:33,250 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 17:23:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:33,262 INFO L225 Difference]: With dead ends: 97 [2021-01-06 17:23:33,263 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 17:23:33,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:23:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 17:23:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-01-06 17:23:33,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 17:23:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-01-06 17:23:33,315 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2021-01-06 17:23:33,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:33,316 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-01-06 17:23:33,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:23:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-01-06 17:23:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:23:33,317 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:33,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:33,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:23:33,318 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:33,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1987056657, now seen corresponding path program 1 times [2021-01-06 17:23:33,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:33,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046346803] [2021-01-06 17:23:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:33,420 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 17:23:33,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046346803] [2021-01-06 17:23:33,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:33,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:23:33,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77704561] [2021-01-06 17:23:33,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:23:33,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:33,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:23:33,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:23:33,432 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 4 states. [2021-01-06 17:23:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:33,479 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2021-01-06 17:23:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:23:33,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 17:23:33,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:33,481 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:23:33,481 INFO L226 Difference]: Without dead ends: 48 [2021-01-06 17:23:33,483 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 17:23:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-06 17:23:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-01-06 17:23:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 17:23:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-01-06 17:23:33,492 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2021-01-06 17:23:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:33,493 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-01-06 17:23:33,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:23:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-01-06 17:23:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:23:33,494 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:33,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:33,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:23:33,495 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:33,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:33,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1420419469, now seen corresponding path program 1 times [2021-01-06 17:23:33,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:33,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019400355] [2021-01-06 17:23:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:33,967 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 17:23:33,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019400355] [2021-01-06 17:23:33,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:33,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:23:33,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335466783] [2021-01-06 17:23:33,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:33,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:33,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:33,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:33,971 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2021-01-06 17:23:46,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:46,815 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2021-01-06 17:23:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:46,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 17:23:46,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:46,817 INFO L225 Difference]: With dead ends: 109 [2021-01-06 17:23:46,817 INFO L226 Difference]: Without dead ends: 70 [2021-01-06 17:23:46,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:23:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-06 17:23:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2021-01-06 17:23:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:23:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2021-01-06 17:23:46,831 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 11 [2021-01-06 17:23:46,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:46,832 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2021-01-06 17:23:46,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:46,832 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2021-01-06 17:23:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:23:46,833 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:46,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:46,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:23:46,833 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:46,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1083313625, now seen corresponding path program 1 times [2021-01-06 17:23:46,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:46,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846770790] [2021-01-06 17:23:46,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:46,850 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:46,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828792191] [2021-01-06 17:23:46,850 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 17:23:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:46,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:23:46,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:47,010 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 17:23:47,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846770790] [2021-01-06 17:23:47,011 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:47,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828792191] [2021-01-06 17:23:47,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:47,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:23:47,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313118867] [2021-01-06 17:23:47,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:47,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:47,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:47,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:47,014 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 5 states. [2021-01-06 17:23:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:47,045 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2021-01-06 17:23:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:23:47,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 17:23:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:47,047 INFO L225 Difference]: With dead ends: 76 [2021-01-06 17:23:47,047 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 17:23:47,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 17:23:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2021-01-06 17:23:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:23:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2021-01-06 17:23:47,058 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 12 [2021-01-06 17:23:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:47,059 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2021-01-06 17:23:47,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2021-01-06 17:23:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:23:47,060 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:47,060 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:47,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:47,275 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:47,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:47,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2047013432, now seen corresponding path program 1 times [2021-01-06 17:23:47,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:47,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778829822] [2021-01-06 17:23:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:47,327 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 17:23:47,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778829822] [2021-01-06 17:23:47,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270610053] [2021-01-06 17:23:47,328 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 17:23:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:47,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:23:47,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:47,397 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 17:23:47,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:23:47,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-01-06 17:23:47,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58694471] [2021-01-06 17:23:47,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:47,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:47,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:47,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:47,400 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 5 states. [2021-01-06 17:23:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:47,442 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2021-01-06 17:23:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:47,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 17:23:47,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:47,443 INFO L225 Difference]: With dead ends: 104 [2021-01-06 17:23:47,444 INFO L226 Difference]: Without dead ends: 65 [2021-01-06 17:23:47,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 17:23:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-06 17:23:47,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-01-06 17:23:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 17:23:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-01-06 17:23:47,454 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 13 [2021-01-06 17:23:47,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:47,454 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-01-06 17:23:47,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:47,455 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-01-06 17:23:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:23:47,456 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:47,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:47,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:47,672 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:47,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:47,674 INFO L82 PathProgramCache]: Analyzing trace with hash -918298294, now seen corresponding path program 1 times [2021-01-06 17:23:47,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:47,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033658859] [2021-01-06 17:23:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:23:47,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033658859] [2021-01-06 17:23:47,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:47,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:23:47,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856662833] [2021-01-06 17:23:47,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:47,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:47,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:47,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:47,853 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2021-01-06 17:24:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:06,864 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2021-01-06 17:24:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:24:06,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:24:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:06,866 INFO L225 Difference]: With dead ends: 103 [2021-01-06 17:24:06,867 INFO L226 Difference]: Without dead ends: 87 [2021-01-06 17:24:06,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:24:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-01-06 17:24:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2021-01-06 17:24:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:24:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2021-01-06 17:24:06,878 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 14 [2021-01-06 17:24:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:06,879 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2021-01-06 17:24:06,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:24:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2021-01-06 17:24:06,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:24:06,880 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:06,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:06,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 17:24:06,880 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:06,881 INFO L82 PathProgramCache]: Analyzing trace with hash -966633767, now seen corresponding path program 1 times [2021-01-06 17:24:06,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:06,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557301208] [2021-01-06 17:24:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:06,891 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:06,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119536883] [2021-01-06 17:24:06,891 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 17:24:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:06,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:24:06,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:07,084 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 17:24:07,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557301208] [2021-01-06 17:24:07,085 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:07,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119536883] [2021-01-06 17:24:07,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:24:07,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:24:07,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924139919] [2021-01-06 17:24:07,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:24:07,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:07,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:24:07,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:24:07,088 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 6 states. [2021-01-06 17:24:20,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:20,005 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2021-01-06 17:24:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:24:20,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:24:20,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:20,007 INFO L225 Difference]: With dead ends: 78 [2021-01-06 17:24:20,008 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 17:24:20,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:24:20,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 17:24:20,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2021-01-06 17:24:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:24:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2021-01-06 17:24:20,018 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 15 [2021-01-06 17:24:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:20,019 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2021-01-06 17:24:20,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:24:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2021-01-06 17:24:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:24:20,020 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:20,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:20,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:20,234 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:20,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1597540912, now seen corresponding path program 1 times [2021-01-06 17:24:20,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:20,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937350154] [2021-01-06 17:24:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:20,248 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:20,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976848391] [2021-01-06 17:24:20,249 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 17:24:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:20,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:24:20,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:20,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937350154] [2021-01-06 17:24:20,366 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:20,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976848391] [2021-01-06 17:24:20,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:20,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:24:20,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870201076] [2021-01-06 17:24:20,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:24:20,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:20,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:24:20,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:24:20,370 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 6 states. [2021-01-06 17:24:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:20,451 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-01-06 17:24:20,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:24:20,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:24:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:20,455 INFO L225 Difference]: With dead ends: 95 [2021-01-06 17:24:20,455 INFO L226 Difference]: Without dead ends: 91 [2021-01-06 17:24:20,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:24:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-06 17:24:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2021-01-06 17:24:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 17:24:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-01-06 17:24:20,467 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 15 [2021-01-06 17:24:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:20,467 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-01-06 17:24:20,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:24:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-01-06 17:24:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:24:20,468 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:20,469 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:20,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:20,670 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:20,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash -745841841, now seen corresponding path program 2 times [2021-01-06 17:24:20,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:20,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861187229] [2021-01-06 17:24:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:20,733 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 17:24:20,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861187229] [2021-01-06 17:24:20,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419818414] [2021-01-06 17:24:20,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:20,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:24:20,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:24:20,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:24:20,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-06 17:24:20,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:20,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-01-06 17:24:20,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265385186] [2021-01-06 17:24:20,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:24:20,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:20,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:24:20,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:24:20,850 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 5 states. [2021-01-06 17:24:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:20,912 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2021-01-06 17:24:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:24:20,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-01-06 17:24:20,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:20,914 INFO L225 Difference]: With dead ends: 123 [2021-01-06 17:24:20,914 INFO L226 Difference]: Without dead ends: 81 [2021-01-06 17:24:20,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-06 17:24:20,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2021-01-06 17:24:20,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 17:24:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2021-01-06 17:24:20,924 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 16 [2021-01-06 17:24:20,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:20,925 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2021-01-06 17:24:20,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:24:20,925 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2021-01-06 17:24:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:24:20,926 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:20,926 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:21,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:21,140 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:21,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:21,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1646243637, now seen corresponding path program 1 times [2021-01-06 17:24:21,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:21,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130198295] [2021-01-06 17:24:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:21,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:21,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193484494] [2021-01-06 17:24:21,152 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 17:24:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:21,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:24:21,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:21,250 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 17:24:21,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130198295] [2021-01-06 17:24:21,250 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:21,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193484494] [2021-01-06 17:24:21,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:21,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:24:21,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783329616] [2021-01-06 17:24:21,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:24:21,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:21,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:24:21,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:24:21,252 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 6 states. [2021-01-06 17:24:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:21,315 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-01-06 17:24:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:24:21,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-06 17:24:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:21,317 INFO L225 Difference]: With dead ends: 97 [2021-01-06 17:24:21,317 INFO L226 Difference]: Without dead ends: 91 [2021-01-06 17:24:21,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 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 17:24:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-06 17:24:21,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2021-01-06 17:24:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-01-06 17:24:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2021-01-06 17:24:21,325 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 17 [2021-01-06 17:24:21,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:21,326 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2021-01-06 17:24:21,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:24:21,326 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2021-01-06 17:24:21,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:24:21,327 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:21,327 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:21,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:21,542 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:21,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:21,543 INFO L82 PathProgramCache]: Analyzing trace with hash -545991120, now seen corresponding path program 1 times [2021-01-06 17:24:21,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:21,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416376211] [2021-01-06 17:24:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:21,554 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:21,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367682713] [2021-01-06 17:24:21,554 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 17:24:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:21,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:24:21,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:24:21,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416376211] [2021-01-06 17:24:21,746 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:21,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367682713] [2021-01-06 17:24:21,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:24:21,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:24:21,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479313092] [2021-01-06 17:24:21,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:24:21,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:21,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:24:21,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:24:21,748 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 6 states. [2021-01-06 17:24:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:22,355 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2021-01-06 17:24:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:24:22,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-01-06 17:24:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:22,357 INFO L225 Difference]: With dead ends: 108 [2021-01-06 17:24:22,357 INFO L226 Difference]: Without dead ends: 94 [2021-01-06 17:24:22,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:24:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-01-06 17:24:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2021-01-06 17:24:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:24:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2021-01-06 17:24:22,370 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 18 [2021-01-06 17:24:22,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:22,370 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2021-01-06 17:24:22,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:24:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2021-01-06 17:24:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:24:22,371 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:22,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:22,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:22,586 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:22,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:22,587 INFO L82 PathProgramCache]: Analyzing trace with hash -711299181, now seen corresponding path program 1 times [2021-01-06 17:24:22,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:22,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247878437] [2021-01-06 17:24:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:22,597 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:22,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627068160] [2021-01-06 17:24:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:22,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:24:22,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:22,858 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:24:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:24:22,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247878437] [2021-01-06 17:24:22,890 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:22,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627068160] [2021-01-06 17:24:22,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:24:22,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:24:22,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667792546] [2021-01-06 17:24:22,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:24:22,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:22,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:24:22,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:24:22,893 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 6 states. [2021-01-06 17:24:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:36,469 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2021-01-06 17:24:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:24:36,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2021-01-06 17:24:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:36,470 INFO L225 Difference]: With dead ends: 91 [2021-01-06 17:24:36,470 INFO L226 Difference]: Without dead ends: 67 [2021-01-06 17:24:36,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-06 17:24:36,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2021-01-06 17:24:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:24:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-01-06 17:24:36,477 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 20 [2021-01-06 17:24:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:36,477 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-01-06 17:24:36,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:24:36,478 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-01-06 17:24:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:24:36,479 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:36,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:36,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:24:36,691 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:36,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1399265450, now seen corresponding path program 1 times [2021-01-06 17:24:36,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:36,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82935120] [2021-01-06 17:24:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:36,705 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:36,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433712918] [2021-01-06 17:24:36,705 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 17:24:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:36,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:24:36,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:37,139 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:24:37,144 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:24:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:37,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82935120] [2021-01-06 17:24:37,185 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:37,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433712918] [2021-01-06 17:24:37,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:37,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:24:37,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136727585] [2021-01-06 17:24:37,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:24:37,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:37,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:24:37,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:37,188 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 10 states. [2021-01-06 17:24:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:49,309 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2021-01-06 17:24:49,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:24:49,310 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2021-01-06 17:24:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:49,311 INFO L225 Difference]: With dead ends: 145 [2021-01-06 17:24:49,311 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 17:24:49,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:24:49,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 17:24:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2021-01-06 17:24:49,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 17:24:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2021-01-06 17:24:49,320 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 29 [2021-01-06 17:24:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:49,320 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2021-01-06 17:24:49,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:24:49,320 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2021-01-06 17:24:49,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:24:49,321 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:49,322 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:49,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:49,536 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:49,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:49,537 INFO L82 PathProgramCache]: Analyzing trace with hash -427539036, now seen corresponding path program 1 times [2021-01-06 17:24:49,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:49,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864885377] [2021-01-06 17:24:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:49,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:49,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591375524] [2021-01-06 17:24:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:49,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:24:49,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:49,678 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 17:24:49,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864885377] [2021-01-06 17:24:49,678 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:49,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591375524] [2021-01-06 17:24:49,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:49,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:24:49,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131586244] [2021-01-06 17:24:49,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:24:49,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:49,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:24:49,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:24:49,680 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 7 states. [2021-01-06 17:24:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:49,737 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2021-01-06 17:24:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:24:49,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2021-01-06 17:24:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:49,739 INFO L225 Difference]: With dead ends: 102 [2021-01-06 17:24:49,739 INFO L226 Difference]: Without dead ends: 90 [2021-01-06 17:24:49,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:24:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-01-06 17:24:49,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2021-01-06 17:24:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 17:24:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-01-06 17:24:49,747 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 30 [2021-01-06 17:24:49,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:49,748 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-01-06 17:24:49,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:24:49,748 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-01-06 17:24:49,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:24:49,749 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:49,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:49,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:49,963 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:49,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:49,964 INFO L82 PathProgramCache]: Analyzing trace with hash -369177479, now seen corresponding path program 1 times [2021-01-06 17:24:49,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:49,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449816393] [2021-01-06 17:24:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:49,986 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:49,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807173288] [2021-01-06 17:24:49,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:50,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:24:50,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:50,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449816393] [2021-01-06 17:24:50,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:50,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807173288] [2021-01-06 17:24:50,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:50,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:24:50,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084363815] [2021-01-06 17:24:50,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:24:50,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:50,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:24:50,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:50,568 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 10 states. [2021-01-06 17:24:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:58,045 INFO L93 Difference]: Finished difference Result 150 states and 159 transitions. [2021-01-06 17:24:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:24:58,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2021-01-06 17:24:58,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:58,047 INFO L225 Difference]: With dead ends: 150 [2021-01-06 17:24:58,047 INFO L226 Difference]: Without dead ends: 111 [2021-01-06 17:24:58,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:24:58,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-06 17:24:58,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2021-01-06 17:24:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-06 17:24:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2021-01-06 17:24:58,071 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 31 [2021-01-06 17:24:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:58,071 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2021-01-06 17:24:58,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:24:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2021-01-06 17:24:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:24:58,078 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:58,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:58,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:24:58,280 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:58,281 INFO L82 PathProgramCache]: Analyzing trace with hash -512605587, now seen corresponding path program 2 times [2021-01-06 17:24:58,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:58,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529496793] [2021-01-06 17:24:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:58,291 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:58,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768611384] [2021-01-06 17:24:58,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:58,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:24:58,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:24:58,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 17:24:58,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:58,873 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:24:58,921 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 17:24:58,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529496793] [2021-01-06 17:24:58,922 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:58,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768611384] [2021-01-06 17:24:58,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:58,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:24:58,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328899392] [2021-01-06 17:24:58,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:24:58,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:58,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:24:58,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:24:58,925 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 12 states. [2021-01-06 17:25:09,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:25:09,364 INFO L93 Difference]: Finished difference Result 192 states and 206 transitions. [2021-01-06 17:25:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:25:09,364 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2021-01-06 17:25:09,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:25:09,366 INFO L225 Difference]: With dead ends: 192 [2021-01-06 17:25:09,366 INFO L226 Difference]: Without dead ends: 153 [2021-01-06 17:25:09,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:25:09,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-01-06 17:25:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 130. [2021-01-06 17:25:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-01-06 17:25:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2021-01-06 17:25:09,378 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 32 [2021-01-06 17:25:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:25:09,379 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2021-01-06 17:25:09,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:25:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2021-01-06 17:25:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:25:09,379 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:25:09,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:25:09,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:25:09,595 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:25:09,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:25:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1702884924, now seen corresponding path program 1 times [2021-01-06 17:25:09,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:25:09,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725667992] [2021-01-06 17:25:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:25:09,606 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:25:09,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219942405] [2021-01-06 17:25:09,607 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 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 17:25:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:25:10,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:25:10,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:25:10,999 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2021-01-06 17:25:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:25:11,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725667992] [2021-01-06 17:25:11,045 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:25:11,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219942405] [2021-01-06 17:25:11,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:25:11,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:25:11,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094335501] [2021-01-06 17:25:11,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:25:11,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:25:11,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:25:11,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:25:11,047 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand 11 states.