/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/hard2_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:55:29,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:55:29,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:55:29,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:55:29,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:55:29,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:55:29,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:55:29,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:55:29,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:55:29,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:55:29,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:55:29,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:55:29,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:55:29,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:55:29,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:55:29,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:55:29,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:55:29,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:55:29,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:55:29,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:55:29,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:55:29,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:55:29,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:55:29,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:55:29,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:55:29,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:55:29,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:55:29,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:55:29,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:55:29,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:55:29,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:55:29,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:55:29,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:55:29,476 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:55:29,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:55:29,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:55:29,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:55:29,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:55:29,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:55:29,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:55:29,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:55:29,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:55:29,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:55:29,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:55:29,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:55:29,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:55:29,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:55:29,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:55:29,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:55:29,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:55:29,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:55:29,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:55:29,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:55:29,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:55:29,485 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:55:29,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:55:29,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:55:29,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:55:29,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:55:29,960 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:55:29,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c [2020-12-23 07:55:30,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ce4210ef2/02f3145b448c4061b60fcec23de77f4e/FLAG26d5c7a25 [2020-12-23 07:55:30,802 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:55:30,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c [2020-12-23 07:55:30,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ce4210ef2/02f3145b448c4061b60fcec23de77f4e/FLAG26d5c7a25 [2020-12-23 07:55:31,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ce4210ef2/02f3145b448c4061b60fcec23de77f4e [2020-12-23 07:55:31,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:55:31,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:55:31,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:55:31,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:55:31,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:55:31,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b2fbfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31, skipping insertion in model container [2020-12-23 07:55:31,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:55:31,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:55:31,381 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/hard2_unwindbound5.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~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[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:55:31,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:55:31,413 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:55:31,427 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/hard2_unwindbound5.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~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[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:55:31,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:55:31,453 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:55:31,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31 WrapperNode [2020-12-23 07:55:31,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:55:31,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:55:31,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:55:31,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:55:31,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:55:31,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:55:31,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:55:31,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:55:31,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (1/1) ... [2020-12-23 07:55:31,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:55:31,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:55:31,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:55:31,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:55:31,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (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 [2020-12-23 07:55:31,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:55:31,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:55:31,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:55:31,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:55:32,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:55:32,191 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-23 07:55:32,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:32 BoogieIcfgContainer [2020-12-23 07:55:32,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:55:32,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:55:32,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:55:32,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:55:32,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:55:31" (1/3) ... [2020-12-23 07:55:32,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103cc9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:55:32, skipping insertion in model container [2020-12-23 07:55:32,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:31" (2/3) ... [2020-12-23 07:55:32,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103cc9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:55:32, skipping insertion in model container [2020-12-23 07:55:32,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:32" (3/3) ... [2020-12-23 07:55:32,203 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound5.c [2020-12-23 07:55:32,211 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:55:32,216 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:55:32,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:55:32,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:55:32,265 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:55:32,265 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:55:32,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:55:32,266 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:55:32,266 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:55:32,266 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:55:32,266 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:55:32,284 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-23 07:55:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 07:55:32,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:32,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 07:55:32,292 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:32,299 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-23 07:55:32,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:32,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238590891] [2020-12-23 07:55:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:32,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238590891] [2020-12-23 07:55:32,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:32,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:32,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264157039] [2020-12-23 07:55:32,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:32,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:32,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:32,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:32,568 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-12-23 07:55:32,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:32,722 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-12-23 07:55:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:32,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 07:55:32,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:32,740 INFO L225 Difference]: With dead ends: 102 [2020-12-23 07:55:32,740 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 07:55:32,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:32,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 07:55:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-12-23 07:55:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 07:55:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-23 07:55:32,800 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-23 07:55:32,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:32,801 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-23 07:55:32,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-23 07:55:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:55:32,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:32,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:32,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:55:32,806 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:32,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:32,811 INFO L82 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2020-12-23 07:55:32,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:32,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905574291] [2020-12-23 07:55:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:32,858 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:32,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266560520] [2020-12-23 07:55:32,859 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 [2020-12-23 07:55:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:32,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 07:55:32,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:33,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905574291] [2020-12-23 07:55:33,017 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:33,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266560520] [2020-12-23 07:55:33,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:33,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:55:33,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807067797] [2020-12-23 07:55:33,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:33,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:33,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:33,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:33,020 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-23 07:55:33,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:33,037 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-12-23 07:55:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:55:33,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 07:55:33,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:33,040 INFO L225 Difference]: With dead ends: 54 [2020-12-23 07:55:33,040 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 07:55:33,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:33,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 07:55:33,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-23 07:55:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:55:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:55:33,050 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-23 07:55:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:33,050 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:55:33,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:55:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:55:33,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:33,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:33,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:55:33,266 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:33,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:33,268 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-23 07:55:33,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:33,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404713102] [2020-12-23 07:55:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:33,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404713102] [2020-12-23 07:55:33,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:33,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:33,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66215015] [2020-12-23 07:55:33,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:33,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:33,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:33,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:33,326 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-23 07:55:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:33,395 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-12-23 07:55:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:33,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 07:55:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:33,397 INFO L225 Difference]: With dead ends: 54 [2020-12-23 07:55:33,397 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 07:55:33,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 07:55:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-23 07:55:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 07:55:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-23 07:55:33,406 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-12-23 07:55:33,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:33,406 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-23 07:55:33,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:33,407 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-23 07:55:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:55:33,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:33,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:33,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:55:33,408 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:33,409 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-23 07:55:33,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:33,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892070371] [2020-12-23 07:55:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:33,423 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:33,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913874131] [2020-12-23 07:55:33,424 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 [2020-12-23 07:55:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:33,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:55:33,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:33,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892070371] [2020-12-23 07:55:33,545 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:33,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913874131] [2020-12-23 07:55:33,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:33,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:55:33,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090023473] [2020-12-23 07:55:33,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:33,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:33,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:33,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:33,548 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-12-23 07:55:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:33,675 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-12-23 07:55:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:33,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-23 07:55:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:33,677 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:55:33,677 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:55:33,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:33,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:55:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-12-23 07:55:33,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 07:55:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-23 07:55:33,688 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-12-23 07:55:33,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:33,689 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-23 07:55:33,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-23 07:55:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:55:33,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:33,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:33,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:33,905 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:33,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:33,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2020-12-23 07:55:33,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:33,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993386951] [2020-12-23 07:55:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:33,930 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:33,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555400175] [2020-12-23 07:55:33,931 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 [2020-12-23 07:55:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:33,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:55:33,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:34,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993386951] [2020-12-23 07:55:34,073 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:34,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555400175] [2020-12-23 07:55:34,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:34,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:55:34,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402823621] [2020-12-23 07:55:34,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:55:34,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:34,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:55:34,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:34,077 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-12-23 07:55:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:34,157 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-23 07:55:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:55:34,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 07:55:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:34,159 INFO L225 Difference]: With dead ends: 66 [2020-12-23 07:55:34,159 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:55:34,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:55:34,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-12-23 07:55:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 07:55:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-23 07:55:34,180 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-12-23 07:55:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:34,180 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-23 07:55:34,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:55:34,180 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-23 07:55:34,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:55:34,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:34,184 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:34,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:34,398 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:34,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2020-12-23 07:55:34,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:34,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523266354] [2020-12-23 07:55:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:34,413 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:34,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530713418] [2020-12-23 07:55:34,413 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 [2020-12-23 07:55:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:34,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:55:34,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:34,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523266354] [2020-12-23 07:55:34,512 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:34,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530713418] [2020-12-23 07:55:34,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:34,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:55:34,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516362906] [2020-12-23 07:55:34,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:55:34,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:34,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:55:34,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:34,514 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-12-23 07:55:34,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:34,554 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-12-23 07:55:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:55:34,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 07:55:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:34,562 INFO L225 Difference]: With dead ends: 78 [2020-12-23 07:55:34,562 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 07:55:34,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 07:55:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-23 07:55:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 07:55:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-23 07:55:34,579 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-12-23 07:55:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:34,579 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-23 07:55:34,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:55:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-23 07:55:34,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:55:34,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:34,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:34,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:34,784 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:34,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:34,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2020-12-23 07:55:34,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:34,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903648322] [2020-12-23 07:55:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:34,800 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:34,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447681429] [2020-12-23 07:55:34,801 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 [2020-12-23 07:55:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:34,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:55:34,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:34,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903648322] [2020-12-23 07:55:34,945 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:34,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447681429] [2020-12-23 07:55:34,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:34,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:34,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879570884] [2020-12-23 07:55:34,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:34,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:34,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:34,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:34,949 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2020-12-23 07:55:35,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:35,148 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-12-23 07:55:35,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:55:35,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 07:55:35,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:35,150 INFO L225 Difference]: With dead ends: 117 [2020-12-23 07:55:35,150 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 07:55:35,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 07:55:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-12-23 07:55:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:55:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-12-23 07:55:35,163 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 18 [2020-12-23 07:55:35,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:35,163 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-12-23 07:55:35,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-12-23 07:55:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:55:35,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:35,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:35,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:55:35,380 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2020-12-23 07:55:35,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:35,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907476658] [2020-12-23 07:55:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:35,397 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:35,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386444919] [2020-12-23 07:55:35,398 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 [2020-12-23 07:55:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:35,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:55:35,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:35,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907476658] [2020-12-23 07:55:35,543 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:35,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386444919] [2020-12-23 07:55:35,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:35,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:55:35,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043889308] [2020-12-23 07:55:35,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:35,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:35,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:35,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:35,546 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 6 states. [2020-12-23 07:55:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:35,571 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-12-23 07:55:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:55:35,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-23 07:55:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:35,572 INFO L225 Difference]: With dead ends: 70 [2020-12-23 07:55:35,573 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 07:55:35,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 07:55:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-12-23 07:55:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:55:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-12-23 07:55:35,582 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2020-12-23 07:55:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:35,583 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-12-23 07:55:35,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-12-23 07:55:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 07:55:35,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:35,584 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:35,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:35,799 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:35,801 INFO L82 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2020-12-23 07:55:35,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:35,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386633974] [2020-12-23 07:55:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:35,816 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:35,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096404295] [2020-12-23 07:55:35,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:35,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:55:35,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:35,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 07:55:35,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 07:55:35,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386633974] [2020-12-23 07:55:35,952 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:35,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096404295] [2020-12-23 07:55:35,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:35,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:55:35,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920231462] [2020-12-23 07:55:35,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:55:35,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:35,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:55:35,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:35,962 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 5 states. [2020-12-23 07:55:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:36,004 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2020-12-23 07:55:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:36,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-23 07:55:36,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:36,005 INFO L225 Difference]: With dead ends: 99 [2020-12-23 07:55:36,005 INFO L226 Difference]: Without dead ends: 71 [2020-12-23 07:55:36,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:36,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-23 07:55:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-12-23 07:55:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-23 07:55:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-12-23 07:55:36,014 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2020-12-23 07:55:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:36,015 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-12-23 07:55:36,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:55:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-12-23 07:55:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 07:55:36,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:36,016 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-23 07:55:36,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:36,231 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:36,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:36,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2020-12-23 07:55:36,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:36,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394444841] [2020-12-23 07:55:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:36,243 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:36,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133564762] [2020-12-23 07:55:36,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:36,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:36,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:36,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:55:36,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:36,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394444841] [2020-12-23 07:55:36,437 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:36,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133564762] [2020-12-23 07:55:36,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:36,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:36,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327459875] [2020-12-23 07:55:36,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:36,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:36,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:36,439 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2020-12-23 07:55:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:36,669 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-12-23 07:55:36,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:55:36,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-23 07:55:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:36,671 INFO L225 Difference]: With dead ends: 138 [2020-12-23 07:55:36,671 INFO L226 Difference]: Without dead ends: 124 [2020-12-23 07:55:36,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-23 07:55:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2020-12-23 07:55:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 07:55:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-12-23 07:55:36,683 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 26 [2020-12-23 07:55:36,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:36,684 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-12-23 07:55:36,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-12-23 07:55:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:55:36,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:36,685 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:36,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:55:36,899 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:36,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:36,900 INFO L82 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2020-12-23 07:55:36,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:36,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310254089] [2020-12-23 07:55:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:36,913 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:36,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963256177] [2020-12-23 07:55:36,913 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 [2020-12-23 07:55:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:36,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:55:36,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:37,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310254089] [2020-12-23 07:55:37,057 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:37,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963256177] [2020-12-23 07:55:37,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:37,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:55:37,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923031864] [2020-12-23 07:55:37,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:37,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:37,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:37,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:37,059 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 6 states. [2020-12-23 07:55:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:37,100 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-12-23 07:55:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:37,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 07:55:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:37,102 INFO L225 Difference]: With dead ends: 100 [2020-12-23 07:55:37,102 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 07:55:37,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:37,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 07:55:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-23 07:55:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 07:55:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-12-23 07:55:37,113 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 27 [2020-12-23 07:55:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:37,114 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-12-23 07:55:37,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-12-23 07:55:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:55:37,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:37,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:37,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:37,333 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:37,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:37,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2020-12-23 07:55:37,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:37,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140240155] [2020-12-23 07:55:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:37,344 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:37,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119290700] [2020-12-23 07:55:37,345 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 [2020-12-23 07:55:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:37,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:55:37,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:37,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140240155] [2020-12-23 07:55:37,538 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:37,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119290700] [2020-12-23 07:55:37,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:37,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:37,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571481789] [2020-12-23 07:55:37,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:37,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:37,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:37,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:37,540 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 7 states. [2020-12-23 07:55:37,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:37,692 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2020-12-23 07:55:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:37,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-23 07:55:37,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:37,694 INFO L225 Difference]: With dead ends: 114 [2020-12-23 07:55:37,694 INFO L226 Difference]: Without dead ends: 112 [2020-12-23 07:55:37,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:37,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-23 07:55:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2020-12-23 07:55:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-23 07:55:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2020-12-23 07:55:37,704 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 29 [2020-12-23 07:55:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:37,704 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2020-12-23 07:55:37,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2020-12-23 07:55:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:55:37,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:37,705 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] [2020-12-23 07:55:37,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:37,920 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:37,921 INFO L82 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2020-12-23 07:55:37,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:37,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841122376] [2020-12-23 07:55:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:37,935 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:37,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449771343] [2020-12-23 07:55:37,936 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 [2020-12-23 07:55:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:37,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:55:37,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:38,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841122376] [2020-12-23 07:55:38,083 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:38,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449771343] [2020-12-23 07:55:38,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:38,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:55:38,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297900829] [2020-12-23 07:55:38,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:38,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:38,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:38,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:38,085 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 7 states. [2020-12-23 07:55:38,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:38,126 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2020-12-23 07:55:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:38,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-23 07:55:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:38,127 INFO L225 Difference]: With dead ends: 112 [2020-12-23 07:55:38,127 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:55:38,128 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 [2020-12-23 07:55:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:55:38,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-12-23 07:55:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-23 07:55:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2020-12-23 07:55:38,137 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 30 [2020-12-23 07:55:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:38,138 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2020-12-23 07:55:38,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:38,138 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2020-12-23 07:55:38,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:55:38,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:38,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:38,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:55:38,354 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:38,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1412607120, now seen corresponding path program 1 times [2020-12-23 07:55:38,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:38,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811716181] [2020-12-23 07:55:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:38,365 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:38,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028153340] [2020-12-23 07:55:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:38,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:55:38,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:38,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811716181] [2020-12-23 07:55:38,581 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:38,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028153340] [2020-12-23 07:55:38,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:38,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:38,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736189044] [2020-12-23 07:55:38,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:38,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:38,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:38,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:38,586 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand 8 states. [2020-12-23 07:55:38,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:38,763 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-12-23 07:55:38,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:38,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:55:38,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:38,764 INFO L225 Difference]: With dead ends: 130 [2020-12-23 07:55:38,764 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:55:38,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:38,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:55:38,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-12-23 07:55:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 07:55:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-12-23 07:55:38,785 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 31 [2020-12-23 07:55:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:38,785 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-12-23 07:55:38,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-12-23 07:55:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:55:38,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:38,793 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-12-23 07:55:39,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:55:39,007 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:39,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:39,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2020-12-23 07:55:39,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:39,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638239930] [2020-12-23 07:55:39,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:39,018 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:39,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636148829] [2020-12-23 07:55:39,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-12-23 07:55:39,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:55:39,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:39,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:55:39,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 07:55:39,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638239930] [2020-12-23 07:55:39,309 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:39,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636148829] [2020-12-23 07:55:39,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:39,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:55:39,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705476745] [2020-12-23 07:55:39,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:55:39,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:39,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:55:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:39,311 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 9 states. [2020-12-23 07:55:39,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:39,535 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-12-23 07:55:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:55:39,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-23 07:55:39,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:39,536 INFO L225 Difference]: With dead ends: 127 [2020-12-23 07:55:39,537 INFO L226 Difference]: Without dead ends: 117 [2020-12-23 07:55:39,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-23 07:55:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-12-23 07:55:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 07:55:39,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2020-12-23 07:55:39,549 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 34 [2020-12-23 07:55:39,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:39,549 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2020-12-23 07:55:39,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:55:39,549 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2020-12-23 07:55:39,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:55:39,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:39,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:39,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:55:39,764 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:39,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:39,765 INFO L82 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2020-12-23 07:55:39,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:39,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561671282] [2020-12-23 07:55:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:39,775 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:39,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559251430] [2020-12-23 07:55:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:39,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:55:39,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:39,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561671282] [2020-12-23 07:55:39,960 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:39,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559251430] [2020-12-23 07:55:39,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:39,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:39,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455036445] [2020-12-23 07:55:39,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:39,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:39,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:39,962 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand 8 states. [2020-12-23 07:55:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:40,098 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-12-23 07:55:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:40,099 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-23 07:55:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:40,100 INFO L225 Difference]: With dead ends: 100 [2020-12-23 07:55:40,100 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 07:55:40,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:55:40,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 07:55:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-23 07:55:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-23 07:55:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-12-23 07:55:40,108 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 34 [2020-12-23 07:55:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:40,108 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-12-23 07:55:40,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:40,108 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-12-23 07:55:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 07:55:40,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:40,109 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:40,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:40,325 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:40,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:40,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2020-12-23 07:55:40,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:40,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852229336] [2020-12-23 07:55:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:40,335 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:40,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252888575] [2020-12-23 07:55:40,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:40,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:40,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:40,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:55:40,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:40,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852229336] [2020-12-23 07:55:40,518 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:40,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252888575] [2020-12-23 07:55:40,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:40,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:55:40,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089930196] [2020-12-23 07:55:40,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:40,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:40,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:40,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:40,524 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 7 states. [2020-12-23 07:55:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:40,586 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-12-23 07:55:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:55:40,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-23 07:55:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:40,587 INFO L225 Difference]: With dead ends: 93 [2020-12-23 07:55:40,587 INFO L226 Difference]: Without dead ends: 85 [2020-12-23 07:55:40,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:55:40,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-23 07:55:40,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-23 07:55:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-23 07:55:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2020-12-23 07:55:40,598 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 35 [2020-12-23 07:55:40,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:40,599 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2020-12-23 07:55:40,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2020-12-23 07:55:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:55:40,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:40,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:40,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:55:40,815 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:40,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:40,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2020-12-23 07:55:40,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:40,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59512634] [2020-12-23 07:55:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:40,826 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:40,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623801341] [2020-12-23 07:55:40,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:40,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:40,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:40,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:55:40,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:41,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59512634] [2020-12-23 07:55:41,057 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:41,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623801341] [2020-12-23 07:55:41,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:41,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:41,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775025697] [2020-12-23 07:55:41,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:41,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:41,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:41,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:41,063 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 8 states. [2020-12-23 07:55:41,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:41,356 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2020-12-23 07:55:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:55:41,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-23 07:55:41,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:41,358 INFO L225 Difference]: With dead ends: 157 [2020-12-23 07:55:41,358 INFO L226 Difference]: Without dead ends: 119 [2020-12-23 07:55:41,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-23 07:55:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-12-23 07:55:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-23 07:55:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2020-12-23 07:55:41,370 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 37 [2020-12-23 07:55:41,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:41,370 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2020-12-23 07:55:41,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2020-12-23 07:55:41,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:55:41,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:41,371 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:41,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:55:41,587 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:41,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:41,588 INFO L82 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2020-12-23 07:55:41,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:41,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553858007] [2020-12-23 07:55:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:41,597 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:41,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973005574] [2020-12-23 07:55:41,597 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:41,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:41,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:41,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:55:41,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:41,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553858007] [2020-12-23 07:55:41,771 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:41,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973005574] [2020-12-23 07:55:41,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:41,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:41,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633779148] [2020-12-23 07:55:41,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:41,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:41,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:41,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:41,775 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 8 states. [2020-12-23 07:55:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:41,817 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2020-12-23 07:55:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:41,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-12-23 07:55:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:41,818 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:55:41,818 INFO L226 Difference]: Without dead ends: 108 [2020-12-23 07:55:41,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-23 07:55:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-12-23 07:55:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-23 07:55:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-12-23 07:55:41,830 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 38 [2020-12-23 07:55:41,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:41,831 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-12-23 07:55:41,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-12-23 07:55:41,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 07:55:41,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:41,831 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:42,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:42,046 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:42,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:42,047 INFO L82 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2020-12-23 07:55:42,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:42,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182319696] [2020-12-23 07:55:42,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:42,056 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:42,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240408325] [2020-12-23 07:55:42,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:42,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-23 07:55:42,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:42,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:55:42,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:42,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182319696] [2020-12-23 07:55:42,203 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:42,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240408325] [2020-12-23 07:55:42,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:42,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:42,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964698765] [2020-12-23 07:55:42,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:42,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:42,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:42,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:42,205 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 8 states. [2020-12-23 07:55:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:42,273 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-12-23 07:55:42,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:55:42,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-12-23 07:55:42,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:42,275 INFO L225 Difference]: With dead ends: 117 [2020-12-23 07:55:42,275 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:55:42,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:55:42,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:55:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-23 07:55:42,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 07:55:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2020-12-23 07:55:42,285 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 43 [2020-12-23 07:55:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:42,286 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2020-12-23 07:55:42,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2020-12-23 07:55:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:55:42,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:42,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 07:55:42,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:42,501 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:42,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:42,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2020-12-23 07:55:42,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:42,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956133182] [2020-12-23 07:55:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:42,513 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:42,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285145957] [2020-12-23 07:55:42,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:42,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:55:42,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:42,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-23 07:55:42,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:42,801 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:55:42,827 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:42,847 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 07:55:42,886 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:42,890 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:42,900 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:42,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:42,912 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:42,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:42,937 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 07:55:42,947 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:42,951 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:42,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:42,969 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:42,974 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 07:55:43,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956133182] [2020-12-23 07:55:43,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:43,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285145957] [2020-12-23 07:55:43,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:43,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:55:43,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215295746] [2020-12-23 07:55:43,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:55:43,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:43,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:55:43,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:55:43,459 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand 10 states. [2020-12-23 07:55:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:43,703 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2020-12-23 07:55:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:55:43,704 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-23 07:55:43,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:43,705 INFO L225 Difference]: With dead ends: 113 [2020-12-23 07:55:43,705 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:55:43,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:55:43,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:55:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-12-23 07:55:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 07:55:43,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-12-23 07:55:43,715 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 44 [2020-12-23 07:55:43,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:43,716 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-12-23 07:55:43,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:55:43,716 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-12-23 07:55:43,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:55:43,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:43,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:43,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:43,930 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:43,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:43,931 INFO L82 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2020-12-23 07:55:43,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:43,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959319231] [2020-12-23 07:55:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:43,949 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:43,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935671582] [2020-12-23 07:55:43,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:44,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:55:44,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:44,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 07:55:44,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:44,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959319231] [2020-12-23 07:55:44,251 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:44,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935671582] [2020-12-23 07:55:44,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:44,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:55:44,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480357575] [2020-12-23 07:55:44,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:55:44,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:44,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:55:44,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:55:44,254 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 10 states. [2020-12-23 07:55:44,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:44,619 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2020-12-23 07:55:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:55:44,620 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-12-23 07:55:44,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:44,621 INFO L225 Difference]: With dead ends: 138 [2020-12-23 07:55:44,621 INFO L226 Difference]: Without dead ends: 123 [2020-12-23 07:55:44,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:55:44,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-23 07:55:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2020-12-23 07:55:44,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 07:55:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-12-23 07:55:44,633 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 45 [2020-12-23 07:55:44,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:44,633 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-12-23 07:55:44,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:55:44,633 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-12-23 07:55:44,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:55:44,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:44,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:44,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:55:44,849 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash 187164747, now seen corresponding path program 1 times [2020-12-23 07:55:44,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:44,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767169221] [2020-12-23 07:55:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:44,860 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:44,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037765566] [2020-12-23 07:55:44,860 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:44,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:55:44,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 07:55:45,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767169221] [2020-12-23 07:55:45,054 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:45,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037765566] [2020-12-23 07:55:45,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:45,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:55:45,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567524985] [2020-12-23 07:55:45,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:45,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:45,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:45,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:45,056 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 6 states. [2020-12-23 07:55:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:45,178 INFO L93 Difference]: Finished difference Result 164 states and 184 transitions. [2020-12-23 07:55:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:55:45,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-12-23 07:55:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:45,181 INFO L225 Difference]: With dead ends: 164 [2020-12-23 07:55:45,181 INFO L226 Difference]: Without dead ends: 133 [2020-12-23 07:55:45,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:45,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-23 07:55:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2020-12-23 07:55:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 07:55:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-12-23 07:55:45,196 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 45 [2020-12-23 07:55:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:45,197 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-12-23 07:55:45,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-12-23 07:55:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:55:45,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:45,198 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:45,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 07:55:45,412 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:45,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:45,413 INFO L82 PathProgramCache]: Analyzing trace with hash -552854946, now seen corresponding path program 4 times [2020-12-23 07:55:45,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:45,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784544153] [2020-12-23 07:55:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:45,421 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:45,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905553673] [2020-12-23 07:55:45,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:45,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:55:45,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-23 07:55:45,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:55:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:55:45,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:55:45,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 07:55:45,649 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:55:45,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:45,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:55:45 BoogieIcfgContainer [2020-12-23 07:55:45,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:55:45,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:55:45,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:55:45,953 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:55:45,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:32" (3/4) ... [2020-12-23 07:55:45,956 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 07:55:46,043 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard2_unwindbound5.c-witness.graphml [2020-12-23 07:55:46,043 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:55:46,047 INFO L168 Benchmark]: Toolchain (without parser) took 14883.46 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 126.7 MB in the beginning and 114.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:46,047 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:55:46,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.25 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:46,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:46,052 INFO L168 Benchmark]: Boogie Preprocessor took 27.92 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:46,053 INFO L168 Benchmark]: RCFGBuilder took 664.23 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 130.9 MB in the end (delta: -17.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:46,053 INFO L168 Benchmark]: TraceAbstraction took 13756.74 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 130.3 MB in the beginning and 118.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:46,054 INFO L168 Benchmark]: Witness Printer took 90.95 ms. Allocated memory is still 229.6 MB. Free memory was 118.2 MB in the beginning and 114.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:46,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.25 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.92 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 664.23 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 130.9 MB in the end (delta: -17.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13756.74 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 130.3 MB in the beginning and 118.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. * Witness Printer took 90.95 ms. Allocated memory is still 229.6 MB. Free memory was 118.2 MB in the beginning and 114.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L38] COND TRUE !(r >= d) VAL [counter=4] [L44] EXPR counter++ VAL [counter=5] [L44] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=5] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=5] [L44] EXPR counter++ VAL [counter=6] [L44] COND FALSE !(counter++<5) [L15] COND TRUE !(cond) VAL [counter=6] [L17] reach_error() VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.5s, OverallIterations: 24, TraceHistogramMax: 5, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 681 SDtfs, 816 SDslu, 1940 SDs, 0 SdLazy, 1754 SolverSat, 329 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 645 GetRequests, 493 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 225 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 677 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 153285 SizeOfPredicates, 132 NumberOfNonLiveVariables, 2558 ConjunctsInSsa, 431 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 100/402 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...