/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_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:23:37,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:23:37,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:23:38,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:23:38,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:23:38,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:23:38,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:23:38,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:23:38,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:23:38,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:23:38,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:23:38,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:23:38,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:23:38,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:23:38,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:23:38,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:23:38,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:23:38,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:23:38,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:23:38,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:23:38,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:23:38,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:23:38,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:23:38,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:23:38,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:23:38,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:23:38,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:23:38,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:23:38,084 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 17:23:38,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:23:38,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:23:38,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:23:38,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:23:38,137 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:23:38,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:23:38,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:23:38,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:23:38,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:23:38,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:23:38,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:23:38,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:23:38,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:23:38,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:23:38,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:23:38,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:23:38,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:23:38,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:23:38,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:23:38,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:23:38,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:23:38,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:23:38,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:23:38,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:23:38,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:23:38,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:23:38,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:23:38,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:23:38,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:23:38,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:23:38,618 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:23:38,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c [2021-01-06 17:23:38,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7bcffb78a/0691275b8f8947899fdbd348973f6879/FLAG0dea69a59 [2021-01-06 17:23:39,445 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:23:39,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c [2021-01-06 17:23:39,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7bcffb78a/0691275b8f8947899fdbd348973f6879/FLAG0dea69a59 [2021-01-06 17:23:39,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7bcffb78a/0691275b8f8947899fdbd348973f6879 [2021-01-06 17:23:39,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:23:39,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:23:39,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:23:39,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:23:39,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:23:39,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:23:39" (1/1) ... [2021-01-06 17:23:39,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c979323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:39, skipping insertion in model container [2021-01-06 17:23:39,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:23:39" (1/1) ... [2021-01-06 17:23:39,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:23:39,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:23:39,989 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_valuebound1.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 17:23:40,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:23:40,049 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:23:40,065 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_valuebound1.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 17:23:40,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:23:40,115 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:23:40,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40 WrapperNode [2021-01-06 17:23:40,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:23:40,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:23:40,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:23:40,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:23:40,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (1/1) ... [2021-01-06 17:23:40,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (1/1) ... [2021-01-06 17:23:40,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:23:40,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:23:40,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:23:40,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:23:40,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (1/1) ... [2021-01-06 17:23:40,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (1/1) ... [2021-01-06 17:23:40,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (1/1) ... [2021-01-06 17:23:40,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (1/1) ... [2021-01-06 17:23:40,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (1/1) ... [2021-01-06 17:23:40,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (1/1) ... [2021-01-06 17:23:40,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (1/1) ... [2021-01-06 17:23:40,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:23:40,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:23:40,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:23:40,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:23:40,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (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 17:23:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:23:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:23:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:23:40,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:23:43,112 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:23:43,112 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2021-01-06 17:23:43,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:23:43 BoogieIcfgContainer [2021-01-06 17:23:43,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:23:43,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:23:43,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:23:43,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:23:43,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:23:39" (1/3) ... [2021-01-06 17:23:43,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79436b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:23:43, skipping insertion in model container [2021-01-06 17:23:43,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:40" (2/3) ... [2021-01-06 17:23:43,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79436b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:23:43, skipping insertion in model container [2021-01-06 17:23:43,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:23:43" (3/3) ... [2021-01-06 17:23:43,128 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound1.c [2021-01-06 17:23:43,134 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:23:43,139 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2021-01-06 17:23:43,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-01-06 17:23:43,184 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:23:43,184 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:23:43,184 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:23:43,184 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:23:43,184 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:23:43,184 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:23:43,185 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:23:43,185 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:23:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2021-01-06 17:23:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:23:43,208 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:43,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:43,209 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 17:23:43,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2021-01-06 17:23:43,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:43,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299398727] [2021-01-06 17:23:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:43,385 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 17:23:43,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299398727] [2021-01-06 17:23:43,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:43,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:23:43,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562220129] [2021-01-06 17:23:43,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:23:43,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:43,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:23:43,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:23:43,412 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2021-01-06 17:23:43,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:43,441 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2021-01-06 17:23:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:23:43,442 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 17:23:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:43,452 INFO L225 Difference]: With dead ends: 97 [2021-01-06 17:23:43,453 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 17:23:43,456 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 17:23:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 17:23:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-01-06 17:23:43,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 17:23:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-01-06 17:23:43,500 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2021-01-06 17:23:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:43,500 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-01-06 17:23:43,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:23:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-01-06 17:23:43,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:23:43,501 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:43,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:43,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:23:43,502 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 17:23:43,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:43,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2021-01-06 17:23:43,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:43,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355334450] [2021-01-06 17:23:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:43,799 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 17:23:43,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355334450] [2021-01-06 17:23:43,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:43,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:23:43,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562297388] [2021-01-06 17:23:43,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:43,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:43,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:43,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:43,805 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 5 states. [2021-01-06 17:23:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:56,972 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2021-01-06 17:23:56,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:56,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 17:23:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:56,976 INFO L225 Difference]: With dead ends: 110 [2021-01-06 17:23:56,976 INFO L226 Difference]: Without dead ends: 68 [2021-01-06 17:23:56,978 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 17:23:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-01-06 17:23:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2021-01-06 17:23:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:23:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-01-06 17:23:56,992 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2021-01-06 17:23:56,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:56,993 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-01-06 17:23:56,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:56,993 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-01-06 17:23:56,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:23:56,994 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:56,994 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:56,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:23:56,995 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 17:23:56,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:56,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2021-01-06 17:23:56,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:56,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761926100] [2021-01-06 17:23:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:57,260 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 17:23:57,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761926100] [2021-01-06 17:23:57,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132752773] [2021-01-06 17:23:57,261 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 17:23:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:57,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 17:23:57,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:57,583 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:23:57,591 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:23:57,625 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 17:23:57,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:23:57,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-01-06 17:23:57,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504239188] [2021-01-06 17:23:57,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:23:57,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:57,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:23:57,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:23:57,628 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2021-01-06 17:24:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:06,477 INFO L93 Difference]: Finished difference Result 149 states and 166 transitions. [2021-01-06 17:24:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:24:06,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2021-01-06 17:24:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:06,479 INFO L225 Difference]: With dead ends: 149 [2021-01-06 17:24:06,479 INFO L226 Difference]: Without dead ends: 105 [2021-01-06 17:24:06,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2021-01-06 17:24:06,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-01-06 17:24:06,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2021-01-06 17:24:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-01-06 17:24:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2021-01-06 17:24:06,504 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 13 [2021-01-06 17:24:06,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:06,505 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2021-01-06 17:24:06,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:24:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2021-01-06 17:24:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:24:06,506 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:06,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:06,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 17:24:06,714 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 17:24:06,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:06,716 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2021-01-06 17:24:06,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:06,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149604214] [2021-01-06 17:24:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:06,739 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:06,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563337286] [2021-01-06 17:24:06,740 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 17:24:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:06,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:24:06,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:06,971 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 17:24:06,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149604214] [2021-01-06 17:24:06,972 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:06,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563337286] [2021-01-06 17:24:06,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:24:06,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:24:06,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509204908] [2021-01-06 17:24:06,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:24:06,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:06,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:24:06,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:24:06,975 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 6 states. [2021-01-06 17:24:13,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:13,808 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2021-01-06 17:24:13,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:24:13,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:24:13,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:13,810 INFO L225 Difference]: With dead ends: 96 [2021-01-06 17:24:13,810 INFO L226 Difference]: Without dead ends: 77 [2021-01-06 17:24:13,811 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 17:24:13,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-06 17:24:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-01-06 17:24:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 17:24:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-01-06 17:24:13,829 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 15 [2021-01-06 17:24:13,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:13,831 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-01-06 17:24:13,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:24:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-01-06 17:24:13,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:24:13,832 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:13,832 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:14,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:14,043 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 17:24:14,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:14,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2021-01-06 17:24:14,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:14,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547339704] [2021-01-06 17:24:14,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:14,062 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:14,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457523227] [2021-01-06 17:24:14,063 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 17:24:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:14,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:24:14,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 17:24:14,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547339704] [2021-01-06 17:24:14,292 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:14,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457523227] [2021-01-06 17:24:14,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:24:14,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:24:14,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884196749] [2021-01-06 17:24:14,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:24:14,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:14,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:24:14,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:24:14,295 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 6 states. [2021-01-06 17:24:25,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:25,244 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2021-01-06 17:24:25,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:24:25,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-06 17:24:25,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:25,246 INFO L225 Difference]: With dead ends: 92 [2021-01-06 17:24:25,247 INFO L226 Difference]: Without dead ends: 90 [2021-01-06 17:24:25,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 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 17:24:25,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-01-06 17:24:25,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2021-01-06 17:24:25,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 17:24:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-01-06 17:24:25,260 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 17 [2021-01-06 17:24:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:25,261 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-01-06 17:24:25,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:24:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-01-06 17:24:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:24:25,262 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:25,262 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 17:24:25,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:25,471 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 17:24:25,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:25,472 INFO L82 PathProgramCache]: Analyzing trace with hash -957581047, now seen corresponding path program 1 times [2021-01-06 17:24:25,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:25,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391747555] [2021-01-06 17:24:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:25,491 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:25,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382183684] [2021-01-06 17:24:25,492 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 17:24:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:25,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:24:25,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:26,121 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:24:26,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:24:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:26,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391747555] [2021-01-06 17:24:26,169 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:26,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382183684] [2021-01-06 17:24:26,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:26,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:24:26,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685841604] [2021-01-06 17:24:26,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:24:26,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:26,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:24:26,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:26,172 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 10 states. [2021-01-06 17:24:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:32,036 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2021-01-06 17:24:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:24:32,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2021-01-06 17:24:32,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:32,038 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:24:32,038 INFO L226 Difference]: Without dead ends: 77 [2021-01-06 17:24:32,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:24:32,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-06 17:24:32,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2021-01-06 17:24:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 17:24:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-01-06 17:24:32,059 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 27 [2021-01-06 17:24:32,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:32,061 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-01-06 17:24:32,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:24:32,061 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-01-06 17:24:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:24:32,063 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:32,064 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 17:24:32,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:32,268 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 17:24:32,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:32,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1112228340, now seen corresponding path program 1 times [2021-01-06 17:24:32,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:32,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374099824] [2021-01-06 17:24:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:32,289 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:32,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735287460] [2021-01-06 17:24:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:32,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 17:24:32,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:32,957 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 17:24:32,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374099824] [2021-01-06 17:24:32,958 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:32,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735287460] [2021-01-06 17:24:32,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:32,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:24:32,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604554129] [2021-01-06 17:24:32,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:24:32,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:32,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:24:32,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:24:32,964 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 9 states. [2021-01-06 17:24:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:45,621 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2021-01-06 17:24:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:24:45,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2021-01-06 17:24:45,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:45,766 INFO L225 Difference]: With dead ends: 69 [2021-01-06 17:24:45,767 INFO L226 Difference]: Without dead ends: 67 [2021-01-06 17:24:45,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:24:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-06 17:24:45,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-01-06 17:24:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:24:45,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-01-06 17:24:45,776 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 29 [2021-01-06 17:24:45,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:45,777 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-01-06 17:24:45,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:24:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-01-06 17:24:45,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:24:45,778 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:45,778 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 17:24:45,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:24:45,979 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 17:24:45,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:45,980 INFO L82 PathProgramCache]: Analyzing trace with hash 595578799, now seen corresponding path program 1 times [2021-01-06 17:24:45,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:45,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102613275] [2021-01-06 17:24:45,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:45,995 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:45,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438863260] [2021-01-06 17:24:45,996 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 17:24:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:46,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:24:46,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:47,017 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 17:24:47,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102613275] [2021-01-06 17:24:47,018 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:47,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438863260] [2021-01-06 17:24:47,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:47,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:24:47,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345570792] [2021-01-06 17:24:47,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:24:47,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:47,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:24:47,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:24:47,021 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 9 states. [2021-01-06 17:24:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:51,978 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2021-01-06 17:24:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:24:51,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2021-01-06 17:24:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:51,980 INFO L225 Difference]: With dead ends: 83 [2021-01-06 17:24:51,980 INFO L226 Difference]: Without dead ends: 34 [2021-01-06 17:24:51,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:24:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-01-06 17:24:51,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-01-06 17:24:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-06 17:24:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2021-01-06 17:24:51,987 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 31 [2021-01-06 17:24:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:51,988 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2021-01-06 17:24:51,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:24:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2021-01-06 17:24:51,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:24:51,989 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:51,989 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 17:24:52,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:52,199 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 17:24:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:52,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1120732658, now seen corresponding path program 1 times [2021-01-06 17:24:52,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:52,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733117883] [2021-01-06 17:24:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:52,217 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:52,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819585283] [2021-01-06 17:24:52,218 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