/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/egcd-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:37:08,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:37:08,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:37:08,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:37:08,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:37:08,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:37:08,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:37:08,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:37:08,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:37:08,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:37:08,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:37:08,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:37:08,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:37:08,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:37:08,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:37:08,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:37:08,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:37:08,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:37:08,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:37:08,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:37:08,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:37:08,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:37:08,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:37:08,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:37:08,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:37:08,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:37:08,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:37:08,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:37:08,684 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 07:37:08,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:37:08,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:37:08,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:37:08,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:37:08,713 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:37:08,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:37:08,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:37:08,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:37:08,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:37:08,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:37:08,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:37:08,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:37:08,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:37:08,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:37:08,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:37:08,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:37:08,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:37:08,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:37:08,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:37:08,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:37:08,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:37:08,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:37:08,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:37:08,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:37:08,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:37:08,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:37:09,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:37:09,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:37:09,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:37:09,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:37:09,141 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:37:09,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c [2020-12-23 07:37:09,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6c9e5256d/62107f6ab81e462d96a828c4c32ea6a8/FLAG5a3b681e8 [2020-12-23 07:37:09,932 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:37:09,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c [2020-12-23 07:37:09,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6c9e5256d/62107f6ab81e462d96a828c4c32ea6a8/FLAG5a3b681e8 [2020-12-23 07:37:10,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6c9e5256d/62107f6ab81e462d96a828c4c32ea6a8 [2020-12-23 07:37:10,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:37:10,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:37:10,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:37:10,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:37:10,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:37:10,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa82a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10, skipping insertion in model container [2020-12-23 07:37:10,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:37:10,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:37:10,573 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/egcd-ll_valuebound100.c[489,502] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~a~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[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:37:10,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:37:10,606 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:37:10,620 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/egcd-ll_valuebound100.c[489,502] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~a~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[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:37:10,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:37:10,648 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:37:10,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10 WrapperNode [2020-12-23 07:37:10,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:37:10,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:37:10,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:37:10,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:37:10,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:37:10,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:37:10,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:37:10,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:37:10,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2020-12-23 07:37:10,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:37:10,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:37:10,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:37:10,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:37:10,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (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 07:37:10,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:37:10,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:37:10,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:37:10,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:37:11,392 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:37:11,393 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-23 07:37:11,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:37:11 BoogieIcfgContainer [2020-12-23 07:37:11,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:37:11,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:37:11,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:37:11,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:37:11,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:37:10" (1/3) ... [2020-12-23 07:37:11,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a683ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:37:11, skipping insertion in model container [2020-12-23 07:37:11,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (2/3) ... [2020-12-23 07:37:11,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a683ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:37:11, skipping insertion in model container [2020-12-23 07:37:11,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:37:11" (3/3) ... [2020-12-23 07:37:11,413 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound100.c [2020-12-23 07:37:11,421 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:37:11,426 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:37:11,447 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:37:11,493 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:37:11,493 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:37:11,493 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:37:11,493 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:37:11,494 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:37:11,494 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:37:11,494 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:37:11,494 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:37:11,515 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-12-23 07:37:11,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:37:11,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:11,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:11,523 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 07:37:11,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-12-23 07:37:11,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:11,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742808516] [2020-12-23 07:37:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:11,762 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 07:37:11,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742808516] [2020-12-23 07:37:11,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:11,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:37:11,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448453563] [2020-12-23 07:37:11,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:37:11,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:37:11,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:37:11,794 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-12-23 07:37:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:11,825 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-12-23 07:37:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:37:11,827 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-23 07:37:11,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:11,841 INFO L225 Difference]: With dead ends: 85 [2020-12-23 07:37:11,841 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 07:37:11,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:37:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 07:37:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-23 07:37:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 07:37:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-12-23 07:37:11,906 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2020-12-23 07:37:11,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:11,907 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-12-23 07:37:11,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:37:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-12-23 07:37:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:37:11,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:11,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:11,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:37:11,912 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 07:37:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:11,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-12-23 07:37:11,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:11,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036200165] [2020-12-23 07:37:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:11,971 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:11,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349966940] [2020-12-23 07:37:11,972 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 07:37:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:12,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:37:12,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:12,180 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 07:37:12,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036200165] [2020-12-23 07:37:12,181 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:12,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349966940] [2020-12-23 07:37:12,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:12,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:37:12,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624619398] [2020-12-23 07:37:12,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:37:12,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:12,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:37:12,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:37:12,185 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 5 states. [2020-12-23 07:37:12,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:12,330 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-23 07:37:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:37:12,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 07:37:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:12,336 INFO L225 Difference]: With dead ends: 70 [2020-12-23 07:37:12,336 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:37:12,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:37:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:37:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-12-23 07:37:12,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:37:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-12-23 07:37:12,366 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2020-12-23 07:37:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:12,367 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-12-23 07:37:12,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:37:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-12-23 07:37:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:37:12,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:12,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:12,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:37:12,589 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 07:37:12,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:12,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2020-12-23 07:37:12,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:12,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671751649] [2020-12-23 07:37:12,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:12,620 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:12,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476535490] [2020-12-23 07:37:12,624 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 07:37:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:12,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:37:12,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:13,028 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 07:37:13,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671751649] [2020-12-23 07:37:13,030 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:13,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476535490] [2020-12-23 07:37:13,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:13,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 07:37:13,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652696079] [2020-12-23 07:37:13,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:37:13,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:13,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:37:13,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:37:13,040 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 12 states. [2020-12-23 07:37:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:13,546 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2020-12-23 07:37:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:37:13,547 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-12-23 07:37:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:13,550 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:37:13,550 INFO L226 Difference]: Without dead ends: 96 [2020-12-23 07:37:13,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:37:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-23 07:37:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2020-12-23 07:37:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 07:37:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-12-23 07:37:13,567 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 15 [2020-12-23 07:37:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:13,567 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-12-23 07:37:13,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:37:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-12-23 07:37:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:37:13,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:13,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:13,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:13,782 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 07:37:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:13,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2020-12-23 07:37:13,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:13,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689185717] [2020-12-23 07:37:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:13,802 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:13,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789943225] [2020-12-23 07:37:13,803 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 07:37:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:13,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:37:13,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:13,981 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 07:37:13,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689185717] [2020-12-23 07:37:13,982 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:13,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789943225] [2020-12-23 07:37:13,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:13,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:37:13,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953481362] [2020-12-23 07:37:13,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:13,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:13,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:13,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:13,984 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 8 states. [2020-12-23 07:37:14,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:14,177 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-12-23 07:37:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:37:14,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-23 07:37:14,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:14,179 INFO L225 Difference]: With dead ends: 84 [2020-12-23 07:37:14,179 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 07:37:14,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:37:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 07:37:14,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-12-23 07:37:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-23 07:37:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-12-23 07:37:14,192 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 17 [2020-12-23 07:37:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:14,192 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-12-23 07:37:14,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-12-23 07:37:14,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:37:14,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:14,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:14,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:14,408 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 07:37:14,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:14,409 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2020-12-23 07:37:14,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:14,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034194509] [2020-12-23 07:37:14,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:14,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:14,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420024219] [2020-12-23 07:37:14,426 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 07:37:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:14,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:37:14,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:14,538 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 07:37:14,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034194509] [2020-12-23 07:37:14,539 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:14,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420024219] [2020-12-23 07:37:14,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:14,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:37:14,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333531029] [2020-12-23 07:37:14,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:37:14,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:14,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:37:14,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:37:14,542 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 4 states. [2020-12-23 07:37:14,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:14,601 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-12-23 07:37:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:37:14,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-23 07:37:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:14,605 INFO L225 Difference]: With dead ends: 68 [2020-12-23 07:37:14,605 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:37:14,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:37:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:37:14,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 07:37:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:37:14,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2020-12-23 07:37:14,634 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 20 [2020-12-23 07:37:14,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:14,635 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2020-12-23 07:37:14,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:37:14,635 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2020-12-23 07:37:14,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:37:14,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:14,636 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:14,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:14,848 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 07:37:14,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:14,850 INFO L82 PathProgramCache]: Analyzing trace with hash 598848193, now seen corresponding path program 1 times [2020-12-23 07:37:14,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:14,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796524049] [2020-12-23 07:37:14,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:14,866 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:14,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583384137] [2020-12-23 07:37:14,866 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 07:37:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:14,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:37:14,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 07:37:14,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796524049] [2020-12-23 07:37:14,978 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:14,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583384137] [2020-12-23 07:37:14,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:14,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:37:14,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605181566] [2020-12-23 07:37:14,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:37:14,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:14,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:37:14,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:37:14,980 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 5 states. [2020-12-23 07:37:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:15,078 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-12-23 07:37:15,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:37:15,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-23 07:37:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:15,079 INFO L225 Difference]: With dead ends: 88 [2020-12-23 07:37:15,079 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 07:37:15,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:37:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 07:37:15,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2020-12-23 07:37:15,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-23 07:37:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-12-23 07:37:15,089 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2020-12-23 07:37:15,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:15,090 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-12-23 07:37:15,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:37:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-12-23 07:37:15,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:37:15,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:15,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:15,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:37:15,307 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 07:37:15,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:15,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2020-12-23 07:37:15,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:15,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376892572] [2020-12-23 07:37:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:15,324 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:15,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821312078] [2020-12-23 07:37:15,324 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 07:37:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:15,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 07:37:15,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:15,498 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 07:37:15,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376892572] [2020-12-23 07:37:15,498 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:15,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821312078] [2020-12-23 07:37:15,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:15,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:37:15,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488895884] [2020-12-23 07:37:15,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:15,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:15,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:15,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:15,501 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 8 states. [2020-12-23 07:37:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:15,661 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-12-23 07:37:15,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:37:15,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-12-23 07:37:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:15,662 INFO L225 Difference]: With dead ends: 80 [2020-12-23 07:37:15,662 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 07:37:15,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:37:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 07:37:15,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-12-23 07:37:15,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 07:37:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-12-23 07:37:15,675 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2020-12-23 07:37:15,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:15,676 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-12-23 07:37:15,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:15,676 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-12-23 07:37:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 07:37:15,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:15,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:15,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:15,891 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 07:37:15,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:15,892 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2020-12-23 07:37:15,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:15,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280305108] [2020-12-23 07:37:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:15,911 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:15,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761576867] [2020-12-23 07:37:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:15,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:37:15,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:16,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280305108] [2020-12-23 07:37:16,159 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:16,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761576867] [2020-12-23 07:37:16,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:16,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:37:16,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393690041] [2020-12-23 07:37:16,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:37:16,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:16,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:37:16,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:37:16,161 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 9 states. [2020-12-23 07:37:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:16,657 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-12-23 07:37:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:37:16,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-23 07:37:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:16,660 INFO L225 Difference]: With dead ends: 105 [2020-12-23 07:37:16,661 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 07:37:16,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:37:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 07:37:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2020-12-23 07:37:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 07:37:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-23 07:37:16,693 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2020-12-23 07:37:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:16,695 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-23 07:37:16,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:37:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-23 07:37:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:37:16,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:16,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:16,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:16,900 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 07:37:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:16,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2020-12-23 07:37:16,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:16,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503243266] [2020-12-23 07:37:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:16,915 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:16,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601071973] [2020-12-23 07:37:16,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:16,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-23 07:37:16,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:17,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503243266] [2020-12-23 07:37:17,247 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:17,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601071973] [2020-12-23 07:37:17,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:17,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:37:17,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350817362] [2020-12-23 07:37:17,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:37:17,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:17,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:37:17,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:37:17,250 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 11 states. [2020-12-23 07:37:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:17,651 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-12-23 07:37:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:37:17,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-12-23 07:37:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:17,653 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:37:17,653 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 07:37:17,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:37:17,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 07:37:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-12-23 07:37:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:37:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-12-23 07:37:17,666 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2020-12-23 07:37:17,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:17,667 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-12-23 07:37:17,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:37:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-12-23 07:37:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:37:17,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:17,668 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:17,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:37:17,884 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 07:37:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:17,885 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2020-12-23 07:37:17,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:17,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666980820] [2020-12-23 07:37:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:17,900 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:17,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173945704] [2020-12-23 07:37:17,901 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 07:37:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:17,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:37:17,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:18,088 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 07:37:18,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666980820] [2020-12-23 07:37:18,089 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:18,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173945704] [2020-12-23 07:37:18,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:18,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:37:18,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520281444] [2020-12-23 07:37:18,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:18,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:18,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:18,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:18,091 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2020-12-23 07:37:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:18,383 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-12-23 07:37:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:37:18,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-23 07:37:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:18,389 INFO L225 Difference]: With dead ends: 116 [2020-12-23 07:37:18,389 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 07:37:18,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:37:18,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 07:37:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-12-23 07:37:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 07:37:18,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2020-12-23 07:37:18,406 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 29 [2020-12-23 07:37:18,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:18,406 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2020-12-23 07:37:18,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2020-12-23 07:37:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:37:18,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:18,411 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:18,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:18,625 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 07:37:18,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:18,626 INFO L82 PathProgramCache]: Analyzing trace with hash 219215494, now seen corresponding path program 2 times [2020-12-23 07:37:18,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:18,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035620263] [2020-12-23 07:37:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:18,638 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:18,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834366093] [2020-12-23 07:37:18,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:18,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:37:18,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:18,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:37:18,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:18,819 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 07:37:18,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035620263] [2020-12-23 07:37:18,820 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:18,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834366093] [2020-12-23 07:37:18,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:18,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:37:18,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948720253] [2020-12-23 07:37:18,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:18,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:18,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:18,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:18,822 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 8 states. [2020-12-23 07:37:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:19,235 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2020-12-23 07:37:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:37:19,235 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-23 07:37:19,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:19,236 INFO L225 Difference]: With dead ends: 131 [2020-12-23 07:37:19,237 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 07:37:19,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:37:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 07:37:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2020-12-23 07:37:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-23 07:37:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-12-23 07:37:19,251 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2020-12-23 07:37:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:19,252 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-12-23 07:37:19,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:19,252 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-12-23 07:37:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:37:19,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:19,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:19,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:19,469 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 07:37:19,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:19,470 INFO L82 PathProgramCache]: Analyzing trace with hash -855526903, now seen corresponding path program 1 times [2020-12-23 07:37:19,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:19,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394871425] [2020-12-23 07:37:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:19,498 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:19,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19588655] [2020-12-23 07:37:19,499 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 07:37:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:19,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:37:19,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:19,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394871425] [2020-12-23 07:37:19,718 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:19,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19588655] [2020-12-23 07:37:19,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:19,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:37:19,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452308842] [2020-12-23 07:37:19,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:19,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:19,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:19,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:19,720 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 8 states. [2020-12-23 07:37:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:20,018 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2020-12-23 07:37:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:37:20,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:37:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:20,021 INFO L225 Difference]: With dead ends: 142 [2020-12-23 07:37:20,021 INFO L226 Difference]: Without dead ends: 140 [2020-12-23 07:37:20,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:37:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-23 07:37:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2020-12-23 07:37:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-23 07:37:20,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-12-23 07:37:20,037 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 31 [2020-12-23 07:37:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:20,037 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-12-23 07:37:20,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:20,038 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-12-23 07:37:20,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:37:20,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:20,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:20,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:37:20,252 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 07:37:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:20,253 INFO L82 PathProgramCache]: Analyzing trace with hash 155590347, now seen corresponding path program 2 times [2020-12-23 07:37:20,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:20,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89654466] [2020-12-23 07:37:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:20,275 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:20,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5128749] [2020-12-23 07:37:20,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:20,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:37:20,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:20,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-23 07:37:20,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:20,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89654466] [2020-12-23 07:37:20,632 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:20,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5128749] [2020-12-23 07:37:20,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:20,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:37:20,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104695260] [2020-12-23 07:37:20,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:37:20,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:20,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:37:20,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:37:20,634 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 11 states. [2020-12-23 07:37:21,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:21,113 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-12-23 07:37:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:37:21,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-12-23 07:37:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:21,115 INFO L225 Difference]: With dead ends: 148 [2020-12-23 07:37:21,115 INFO L226 Difference]: Without dead ends: 146 [2020-12-23 07:37:21,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:37:21,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-23 07:37:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2020-12-23 07:37:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-23 07:37:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2020-12-23 07:37:21,131 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 31 [2020-12-23 07:37:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:21,132 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2020-12-23 07:37:21,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:37:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2020-12-23 07:37:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:37:21,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:21,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:21,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:37:21,347 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 07:37:21,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:21,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1663177194, now seen corresponding path program 2 times [2020-12-23 07:37:21,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:21,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216756199] [2020-12-23 07:37:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:21,360 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:21,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859307258] [2020-12-23 07:37:21,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:21,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:37:21,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:21,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 07:37:21,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:21,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216756199] [2020-12-23 07:37:21,627 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:21,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859307258] [2020-12-23 07:37:21,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:21,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:37:21,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248619398] [2020-12-23 07:37:21,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:37:21,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:21,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:37:21,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:37:21,635 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand 9 states. [2020-12-23 07:37:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:21,931 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2020-12-23 07:37:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:37:21,931 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-23 07:37:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:21,932 INFO L225 Difference]: With dead ends: 160 [2020-12-23 07:37:21,933 INFO L226 Difference]: Without dead ends: 148 [2020-12-23 07:37:21,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:37:21,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-23 07:37:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2020-12-23 07:37:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-23 07:37:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2020-12-23 07:37:21,949 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2020-12-23 07:37:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:21,949 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2020-12-23 07:37:21,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:37:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2020-12-23 07:37:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:37:21,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:21,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:22,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:37:22,167 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 07:37:22,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:22,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1610721748, now seen corresponding path program 1 times [2020-12-23 07:37:22,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:22,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144977178] [2020-12-23 07:37:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:22,179 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:22,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433682148] [2020-12-23 07:37:22,179 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 07:37:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:22,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:37:22,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:22,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144977178] [2020-12-23 07:37:22,387 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:22,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433682148] [2020-12-23 07:37:22,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:22,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:37:22,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55131866] [2020-12-23 07:37:22,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:22,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:22,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:22,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:22,389 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 8 states. [2020-12-23 07:37:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:22,726 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2020-12-23 07:37:22,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:37:22,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-23 07:37:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:22,728 INFO L225 Difference]: With dead ends: 159 [2020-12-23 07:37:22,728 INFO L226 Difference]: Without dead ends: 147 [2020-12-23 07:37:22,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:37:22,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-23 07:37:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2020-12-23 07:37:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-23 07:37:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2020-12-23 07:37:22,767 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 33 [2020-12-23 07:37:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:22,768 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2020-12-23 07:37:22,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2020-12-23 07:37:22,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:37:22,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:22,770 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:22,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:22,985 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 07:37:22,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:22,986 INFO L82 PathProgramCache]: Analyzing trace with hash 130855945, now seen corresponding path program 3 times [2020-12-23 07:37:22,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:22,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516515261] [2020-12-23 07:37:22,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:23,009 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:23,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447725660] [2020-12-23 07:37:23,009 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 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 07:37:23,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:37:23,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:23,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:37:23,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:23,442 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:37:23,449 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:37:23,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:37:26,544 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 29 [2020-12-23 07:37:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 07:37:26,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516515261] [2020-12-23 07:37:26,605 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:26,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447725660] [2020-12-23 07:37:26,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:26,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-23 07:37:26,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570320078] [2020-12-23 07:37:26,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 07:37:26,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:26,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 07:37:26,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2020-12-23 07:37:26,608 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 17 states. [2020-12-23 07:37:27,769 WARN L197 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-12-23 07:37:27,954 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-12-23 07:37:29,087 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-23 07:37:29,378 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-12-23 07:37:46,835 WARN L197 SmtUtils]: Spent 12.55 s on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-12-23 07:37:52,247 WARN L197 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-12-23 07:37:56,865 WARN L197 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-23 07:37:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:58,206 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-12-23 07:37:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:37:58,206 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-12-23 07:37:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:58,208 INFO L225 Difference]: With dead ends: 172 [2020-12-23 07:37:58,208 INFO L226 Difference]: Without dead ends: 162 [2020-12-23 07:37:58,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=191, Invalid=506, Unknown=5, NotChecked=0, Total=702 [2020-12-23 07:37:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-23 07:37:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2020-12-23 07:37:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 07:37:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-12-23 07:37:58,248 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 37 [2020-12-23 07:37:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:58,248 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-12-23 07:37:58,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 07:37:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-12-23 07:37:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:37:58,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:58,249 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:58,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:37:58,464 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 07:37:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:58,465 INFO L82 PathProgramCache]: Analyzing trace with hash -127249911, now seen corresponding path program 4 times [2020-12-23 07:37:58,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:58,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910850176] [2020-12-23 07:37:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:58,476 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:58,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759124930] [2020-12-23 07:37:58,476 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 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 07:37:58,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:37:58,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:58,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:37:58,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:58,750 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 07:37:58,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910850176] [2020-12-23 07:37:58,750 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:58,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759124930] [2020-12-23 07:37:58,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:58,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:37:58,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964124766] [2020-12-23 07:37:58,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:37:58,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:58,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:37:58,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:37:58,753 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-12-23 07:37:59,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:59,296 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-23 07:37:59,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:37:59,297 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-23 07:37:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:59,298 INFO L225 Difference]: With dead ends: 162 [2020-12-23 07:37:59,298 INFO L226 Difference]: Without dead ends: 158 [2020-12-23 07:37:59,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:37:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-23 07:37:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2020-12-23 07:37:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-23 07:37:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2020-12-23 07:37:59,325 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2020-12-23 07:37:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:59,325 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2020-12-23 07:37:59,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:37:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2020-12-23 07:37:59,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:37:59,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:59,326 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:59,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:37:59,539 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 07:37:59,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:59,540 INFO L82 PathProgramCache]: Analyzing trace with hash -127309493, now seen corresponding path program 5 times [2020-12-23 07:37:59,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:59,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329896403] [2020-12-23 07:37:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:59,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:59,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232516280] [2020-12-23 07:37:59,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_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 07:38:00,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 07:38:00,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:00,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:38:00,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:00,756 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 07:38:00,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329896403] [2020-12-23 07:38:00,757 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:00,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232516280] [2020-12-23 07:38:00,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:00,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:38:00,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993402058] [2020-12-23 07:38:00,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:38:00,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:00,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:38:00,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:38:00,761 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 7 states. [2020-12-23 07:38:01,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:01,108 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-23 07:38:01,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:38:01,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-23 07:38:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:01,110 INFO L225 Difference]: With dead ends: 162 [2020-12-23 07:38:01,110 INFO L226 Difference]: Without dead ends: 152 [2020-12-23 07:38:01,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:38:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-23 07:38:01,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2020-12-23 07:38:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-23 07:38:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2020-12-23 07:38:01,134 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2020-12-23 07:38:01,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:01,135 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2020-12-23 07:38:01,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:38:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2020-12-23 07:38:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:38:01,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:01,136 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:01,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:38:01,345 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 07:38:01,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:01,346 INFO L82 PathProgramCache]: Analyzing trace with hash 948563977, now seen corresponding path program 6 times [2020-12-23 07:38:01,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:01,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779074529] [2020-12-23 07:38:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:01,368 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:01,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049541962] [2020-12-23 07:38:01,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 07:38:01,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-23 07:38:01,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:01,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:38:01,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:01,638 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 07:38:01,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779074529] [2020-12-23 07:38:01,639 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:01,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049541962] [2020-12-23 07:38:01,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:01,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:38:01,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322264686] [2020-12-23 07:38:01,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:38:01,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:01,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:38:01,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:38:01,640 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 9 states. [2020-12-23 07:38:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:02,433 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2020-12-23 07:38:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:38:02,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-23 07:38:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:02,436 INFO L225 Difference]: With dead ends: 170 [2020-12-23 07:38:02,436 INFO L226 Difference]: Without dead ends: 166 [2020-12-23 07:38:02,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:38:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-23 07:38:02,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2020-12-23 07:38:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-23 07:38:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2020-12-23 07:38:02,460 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2020-12-23 07:38:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:02,461 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2020-12-23 07:38:02,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:38:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2020-12-23 07:38:02,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:38:02,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:02,461 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:02,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:02,675 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 07:38:02,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:02,675 INFO L82 PathProgramCache]: Analyzing trace with hash 948504395, now seen corresponding path program 7 times [2020-12-23 07:38:02,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:02,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920194024] [2020-12-23 07:38:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:02,685 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:02,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798475090] [2020-12-23 07:38:02,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 07:38:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:02,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:38:02,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:02,952 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 07:38:02,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920194024] [2020-12-23 07:38:02,952 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:02,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798475090] [2020-12-23 07:38:02,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:02,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:38:02,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336716910] [2020-12-23 07:38:02,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:38:02,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:02,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:38:02,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:38:02,954 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand 9 states. [2020-12-23 07:38:03,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:03,484 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-12-23 07:38:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:38:03,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-23 07:38:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:03,485 INFO L225 Difference]: With dead ends: 166 [2020-12-23 07:38:03,485 INFO L226 Difference]: Without dead ends: 156 [2020-12-23 07:38:03,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:38:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-23 07:38:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2020-12-23 07:38:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-23 07:38:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-12-23 07:38:03,508 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 37 [2020-12-23 07:38:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:03,508 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-12-23 07:38:03,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:38:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-12-23 07:38:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:38:03,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:03,509 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:03,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:03,725 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 07:38:03,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:03,726 INFO L82 PathProgramCache]: Analyzing trace with hash 690398539, now seen corresponding path program 8 times [2020-12-23 07:38:03,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:03,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735568092] [2020-12-23 07:38:03,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:03,736 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:03,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131068797] [2020-12-23 07:38:03,736 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 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 07:38:03,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:38:03,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:03,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:38:03,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:03,980 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 07:38:03,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735568092] [2020-12-23 07:38:03,981 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:03,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131068797] [2020-12-23 07:38:03,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:03,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:38:03,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797295073] [2020-12-23 07:38:03,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:38:03,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:03,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:38:03,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:38:03,983 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 9 states. [2020-12-23 07:38:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:04,770 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-12-23 07:38:04,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:38:04,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-23 07:38:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:04,772 INFO L225 Difference]: With dead ends: 166 [2020-12-23 07:38:04,772 INFO L226 Difference]: Without dead ends: 162 [2020-12-23 07:38:04,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:38:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-23 07:38:04,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2020-12-23 07:38:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-23 07:38:04,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2020-12-23 07:38:04,795 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 37 [2020-12-23 07:38:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:04,795 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2020-12-23 07:38:04,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:38:04,796 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2020-12-23 07:38:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:38:04,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:04,796 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:04,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 07:38:04,997 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 07:38:04,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:04,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1198667980, now seen corresponding path program 2 times [2020-12-23 07:38:04,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:04,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685202777] [2020-12-23 07:38:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:05,007 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:05,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138963146] [2020-12-23 07:38:05,008 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 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 07:38:05,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:38:05,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:05,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-23 07:38:05,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:25,127 WARN L197 SmtUtils]: Spent 13.24 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-23 07:38:53,521 WARN L197 SmtUtils]: Spent 16.47 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 07:38:53,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685202777] [2020-12-23 07:38:53,533 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:53,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138963146] [2020-12-23 07:38:53,534 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:38:53,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:53,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:38:53,534 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:38:53,534 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:38:53,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:38:53,767 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:38:53,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:38:53 BoogieIcfgContainer [2020-12-23 07:38:53,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:38:53,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:38:53,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:38:53,768 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:38:53,769 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:37:11" (3/4) ... [2020-12-23 07:38:53,775 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:38:53,775 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:38:53,776 INFO L168 Benchmark]: Toolchain (without parser) took 103455.47 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 125.9 MB in the beginning and 197.2 MB in the end (delta: -71.3 MB). Peak memory consumption was 41.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:53,777 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:38:53,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.51 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:53,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.92 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:53,778 INFO L168 Benchmark]: Boogie Preprocessor took 29.85 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:53,778 INFO L168 Benchmark]: RCFGBuilder took 663.18 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 132.8 MB in the end (delta: -20.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:53,778 INFO L168 Benchmark]: TraceAbstraction took 102368.55 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 132.2 MB in the beginning and 197.2 MB in the end (delta: -65.1 MB). Peak memory consumption was 46.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:53,779 INFO L168 Benchmark]: Witness Printer took 7.34 ms. Allocated memory is still 263.2 MB. Free memory is still 197.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:38:53,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 322.51 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.7 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 49.92 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.85 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 663.18 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 132.8 MB in the end (delta: -20.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 102368.55 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 132.2 MB in the beginning and 197.2 MB in the end (delta: -65.1 MB). Peak memory consumption was 46.6 MB. Max. memory is 8.0 GB. * Witness Printer took 7.34 ms. Allocated memory is still 263.2 MB. Free memory is still 197.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] long long a, b, p, q, r, s; [L20] int x, y; [L21] x = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND TRUE a > b [L44] a = a - b [L45] p = p - q [L46] r = r - s [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 102.2s, OverallIterations: 22, TraceHistogramMax: 4, AutomataDifference: 38.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 701 SDtfs, 1993 SDslu, 2167 SDs, 0 SdLazy, 3248 SolverSat, 400 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 34.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 21 MinimizatonAttempts, 333 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 577 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 556 ConstructedInterpolants, 4 QuantifiedInterpolants, 232045 SizeOfPredicates, 218 NumberOfNonLiveVariables, 2350 ConjunctsInSsa, 655 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 19/288 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...