/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_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:35:17,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:35:17,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:35:17,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:35:17,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:35:17,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:35:17,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:35:17,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:35:17,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:35:17,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:35:17,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:35:17,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:35:17,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:35:17,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:35:17,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:35:17,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:35:17,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:35:17,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:35:17,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:35:17,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:35:17,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:35:17,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:35:17,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:35:17,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:35:17,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:35:17,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:35:17,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:35:17,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:35:17,511 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 07:35:17,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:35:17,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:35:17,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:35:17,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:35:17,566 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:35:17,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:35:17,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:35:17,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:35:17,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:35:17,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:35:17,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:35:17,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:35:17,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:35:17,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:35:17,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:35:17,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:35:17,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:35:17,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:35:17,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:35:17,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:35:17,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:35:17,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:35:17,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:35:17,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:35:17,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:35:17,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:35:18,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:35:18,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:35:18,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:35:18,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:35:18,069 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:35:18,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c [2020-12-23 07:35:18,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e3d341707/dfc9228376d84154bc94310e06baeca2/FLAG6861b18b1 [2020-12-23 07:35:18,802 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:35:18,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c [2020-12-23 07:35:18,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e3d341707/dfc9228376d84154bc94310e06baeca2/FLAG6861b18b1 [2020-12-23 07:35:18,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e3d341707/dfc9228376d84154bc94310e06baeca2 [2020-12-23 07:35:18,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:35:18,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:35:18,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:35:18,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:35:18,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:35:18,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:35:18" (1/1) ... [2020-12-23 07:35:18,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6142b679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:18, skipping insertion in model container [2020-12-23 07:35:18,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:35:18" (1/1) ... [2020-12-23 07:35:18,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:35:18,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:35:19,042 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_unwindbound10.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 07:35:19,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:35:19,078 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:35:19,097 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_unwindbound10.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 07:35:19,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:35:19,123 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:35:19,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19 WrapperNode [2020-12-23 07:35:19,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:35:19,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:35:19,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:35:19,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:35:19,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (1/1) ... [2020-12-23 07:35:19,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (1/1) ... [2020-12-23 07:35:19,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:35:19,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:35:19,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:35:19,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:35:19,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (1/1) ... [2020-12-23 07:35:19,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (1/1) ... [2020-12-23 07:35:19,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (1/1) ... [2020-12-23 07:35:19,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (1/1) ... [2020-12-23 07:35:19,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (1/1) ... [2020-12-23 07:35:19,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (1/1) ... [2020-12-23 07:35:19,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (1/1) ... [2020-12-23 07:35:19,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:35:19,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:35:19,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:35:19,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:35:19,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (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 07:35:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:35:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:35:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:35:19,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:35:19,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:35:19,694 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-23 07:35:19,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:35:19 BoogieIcfgContainer [2020-12-23 07:35:19,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:35:19,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:35:19,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:35:19,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:35:19,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:35:18" (1/3) ... [2020-12-23 07:35:19,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686bf3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:35:19, skipping insertion in model container [2020-12-23 07:35:19,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:19" (2/3) ... [2020-12-23 07:35:19,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686bf3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:35:19, skipping insertion in model container [2020-12-23 07:35:19,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:35:19" (3/3) ... [2020-12-23 07:35:19,708 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound10.c [2020-12-23 07:35:19,718 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:35:19,730 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:35:19,757 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:35:19,797 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:35:19,800 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:35:19,800 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:35:19,801 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:35:19,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:35:19,801 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:35:19,801 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:35:19,801 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:35:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 07:35:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:35:19,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:19,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:19,836 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 07:35:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2020-12-23 07:35:19,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:19,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684306086] [2020-12-23 07:35:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:20,074 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 07:35:20,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684306086] [2020-12-23 07:35:20,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:20,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:35:20,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507245122] [2020-12-23 07:35:20,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:35:20,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:20,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:35:20,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:35:20,108 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 07:35:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:20,141 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-12-23 07:35:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:35:20,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 07:35:20,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:20,170 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:35:20,170 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:35:20,178 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 07:35:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:35:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:35:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:35:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:35:20,234 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2020-12-23 07:35:20,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:20,235 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:35:20,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:35:20,235 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:35:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:35:20,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:20,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:20,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:35:20,242 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 07:35:20,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:20,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-12-23 07:35:20,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:20,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353096727] [2020-12-23 07:35:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:20,299 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:20,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248190855] [2020-12-23 07:35:20,302 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 07:35:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:20,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:35:20,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:20,614 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 07:35:20,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353096727] [2020-12-23 07:35:20,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:20,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248190855] [2020-12-23 07:35:20,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:20,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:35:20,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494216258] [2020-12-23 07:35:20,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:35:20,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:20,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:35:20,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:35:20,623 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-12-23 07:35:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:20,792 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-12-23 07:35:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:35:20,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 07:35:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:20,794 INFO L225 Difference]: With dead ends: 68 [2020-12-23 07:35:20,794 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 07:35:20,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:35:20,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 07:35:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-12-23 07:35:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 07:35:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-12-23 07:35:20,808 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 10 [2020-12-23 07:35:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:20,808 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-12-23 07:35:20,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:35:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-12-23 07:35:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:35:20,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:20,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:21,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:35:21,025 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 07:35:21,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:21,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1507402239, now seen corresponding path program 1 times [2020-12-23 07:35:21,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:21,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878081831] [2020-12-23 07:35:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:21,079 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 07:35:21,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878081831] [2020-12-23 07:35:21,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:21,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:35:21,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672876829] [2020-12-23 07:35:21,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:35:21,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:21,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:35:21,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:35:21,082 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 4 states. [2020-12-23 07:35:21,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:21,103 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-12-23 07:35:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:35:21,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 07:35:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:21,105 INFO L225 Difference]: With dead ends: 68 [2020-12-23 07:35:21,105 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:35:21,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:35:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:35:21,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-23 07:35:21,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:35:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-12-23 07:35:21,117 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 11 [2020-12-23 07:35:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:21,117 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-12-23 07:35:21,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:35:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-12-23 07:35:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:35:21,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:21,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:21,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:35:21,119 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 07:35:21,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:21,119 INFO L82 PathProgramCache]: Analyzing trace with hash 515817425, now seen corresponding path program 1 times [2020-12-23 07:35:21,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:21,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129876739] [2020-12-23 07:35:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:21,136 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:21,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090066379] [2020-12-23 07:35:21,136 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 07:35:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:21,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:35:21,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:21,291 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 07:35:21,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129876739] [2020-12-23 07:35:21,292 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:21,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090066379] [2020-12-23 07:35:21,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:21,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:35:21,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612577169] [2020-12-23 07:35:21,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:21,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:21,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:21,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:21,295 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 8 states. [2020-12-23 07:35:21,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:21,549 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2020-12-23 07:35:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:35:21,550 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-23 07:35:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:21,553 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:35:21,553 INFO L226 Difference]: Without dead ends: 96 [2020-12-23 07:35:21,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:35:21,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-23 07:35:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2020-12-23 07:35:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 07:35:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2020-12-23 07:35:21,568 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 12 [2020-12-23 07:35:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:21,568 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2020-12-23 07:35:21,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:21,568 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2020-12-23 07:35:21,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:35:21,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:21,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:21,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:21,785 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 07:35:21,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:21,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1779462740, now seen corresponding path program 1 times [2020-12-23 07:35:21,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:21,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627969182] [2020-12-23 07:35:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:21,808 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:21,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191937654] [2020-12-23 07:35:21,809 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 07:35:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:21,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:35:21,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:21,922 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 07:35:21,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627969182] [2020-12-23 07:35:21,922 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:21,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191937654] [2020-12-23 07:35:21,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:21,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:35:21,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145773810] [2020-12-23 07:35:21,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:35:21,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:21,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:35:21,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:35:21,925 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand 6 states. [2020-12-23 07:35:22,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:22,050 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2020-12-23 07:35:22,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:35:22,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-23 07:35:22,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:22,052 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:35:22,052 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:35:22,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:35:22,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-12-23 07:35:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-23 07:35:22,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-12-23 07:35:22,063 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 14 [2020-12-23 07:35:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:22,064 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-12-23 07:35:22,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:35:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-12-23 07:35:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:35:22,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:22,065 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 07:35:22,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:22,281 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 07:35:22,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:22,282 INFO L82 PathProgramCache]: Analyzing trace with hash -801918668, now seen corresponding path program 1 times [2020-12-23 07:35:22,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:22,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421133465] [2020-12-23 07:35:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:22,298 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:22,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358983571] [2020-12-23 07:35:22,299 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 07:35:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:22,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:35:22,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:22,385 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 07:35:22,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421133465] [2020-12-23 07:35:22,385 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:22,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358983571] [2020-12-23 07:35:22,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:22,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:35:22,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322530456] [2020-12-23 07:35:22,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:35:22,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:22,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:35:22,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:35:22,388 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2020-12-23 07:35:22,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:22,450 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2020-12-23 07:35:22,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:35:22,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 07:35:22,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:22,453 INFO L225 Difference]: With dead ends: 88 [2020-12-23 07:35:22,453 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 07:35:22,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 07:35:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 07:35:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2020-12-23 07:35:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-23 07:35:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-12-23 07:35:22,463 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 17 [2020-12-23 07:35:22,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:22,464 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-12-23 07:35:22,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:35:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-12-23 07:35:22,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:35:22,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:22,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:22,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:22,680 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 07:35:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:22,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1844536457, now seen corresponding path program 1 times [2020-12-23 07:35:22,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:22,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336069291] [2020-12-23 07:35:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:22,701 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:22,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688482184] [2020-12-23 07:35:22,702 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 07:35:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:22,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 07:35:22,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:22,867 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 07:35:22,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336069291] [2020-12-23 07:35:22,868 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:22,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688482184] [2020-12-23 07:35:22,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:22,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:35:22,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377348075] [2020-12-23 07:35:22,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:22,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:22,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:22,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:22,870 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 8 states. [2020-12-23 07:35:23,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:23,147 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-12-23 07:35:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:35:23,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-23 07:35:23,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:23,149 INFO L225 Difference]: With dead ends: 111 [2020-12-23 07:35:23,149 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 07:35:23,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 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 07:35:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 07:35:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 64. [2020-12-23 07:35:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 07:35:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-12-23 07:35:23,161 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 19 [2020-12-23 07:35:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:23,162 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-12-23 07:35:23,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-12-23 07:35:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:35:23,163 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:23,163 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:23,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:35:23,378 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 07:35:23,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:23,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1793740814, now seen corresponding path program 1 times [2020-12-23 07:35:23,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:23,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536606565] [2020-12-23 07:35:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:23,395 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:23,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393893922] [2020-12-23 07:35:23,396 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 07:35:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:23,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:35:23,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 07:35:23,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536606565] [2020-12-23 07:35:23,514 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:23,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393893922] [2020-12-23 07:35:23,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:23,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:35:23,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642886244] [2020-12-23 07:35:23,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:35:23,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:23,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:35:23,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:35:23,517 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 5 states. [2020-12-23 07:35:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:23,631 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-12-23 07:35:23,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:35:23,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-23 07:35:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:23,633 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:35:23,633 INFO L226 Difference]: Without dead ends: 97 [2020-12-23 07:35:23,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 07:35:23,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-23 07:35:23,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2020-12-23 07:35:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 07:35:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2020-12-23 07:35:23,647 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 19 [2020-12-23 07:35:23,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:23,648 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2020-12-23 07:35:23,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:35:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2020-12-23 07:35:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:35:23,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:23,649 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:23,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:23,863 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 07:35:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:23,864 INFO L82 PathProgramCache]: Analyzing trace with hash 171335487, now seen corresponding path program 1 times [2020-12-23 07:35:23,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:23,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975482233] [2020-12-23 07:35:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:23,879 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:23,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140101567] [2020-12-23 07:35:23,880 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 07:35:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:23,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:35:23,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:24,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975482233] [2020-12-23 07:35:24,004 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:24,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140101567] [2020-12-23 07:35:24,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:24,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:35:24,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455637584] [2020-12-23 07:35:24,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:35:24,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:24,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:35:24,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:35:24,015 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 5 states. [2020-12-23 07:35:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:24,047 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2020-12-23 07:35:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:35:24,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-23 07:35:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:24,049 INFO L225 Difference]: With dead ends: 109 [2020-12-23 07:35:24,049 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 07:35:24,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:35:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 07:35:24,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-12-23 07:35:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-23 07:35:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2020-12-23 07:35:24,062 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 20 [2020-12-23 07:35:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:24,062 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2020-12-23 07:35:24,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:35:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2020-12-23 07:35:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:35:24,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:24,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:24,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:24,279 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 07:35:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:24,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1017079379, now seen corresponding path program 1 times [2020-12-23 07:35:24,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:24,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173181423] [2020-12-23 07:35:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:24,302 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:24,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863373541] [2020-12-23 07:35:24,306 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 07:35:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:24,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:35:24,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:24,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173181423] [2020-12-23 07:35:24,554 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:24,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863373541] [2020-12-23 07:35:24,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:24,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:35:24,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050893509] [2020-12-23 07:35:24,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:24,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:24,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:24,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:24,557 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand 8 states. [2020-12-23 07:35:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:24,764 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2020-12-23 07:35:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:35:24,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-23 07:35:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:24,766 INFO L225 Difference]: With dead ends: 133 [2020-12-23 07:35:24,766 INFO L226 Difference]: Without dead ends: 131 [2020-12-23 07:35:24,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:35:24,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-23 07:35:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2020-12-23 07:35:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:35:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-12-23 07:35:24,779 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 21 [2020-12-23 07:35:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:24,779 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-12-23 07:35:24,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-12-23 07:35:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 07:35:24,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:24,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:24,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:35:24,995 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 07:35:24,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:24,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1159045544, now seen corresponding path program 1 times [2020-12-23 07:35:24,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:24,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914398998] [2020-12-23 07:35:24,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:25,008 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:25,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542690287] [2020-12-23 07:35:25,009 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 07:35:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:25,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:35:25,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:25,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914398998] [2020-12-23 07:35:25,221 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:25,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542690287] [2020-12-23 07:35:25,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:25,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:35:25,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598473866] [2020-12-23 07:35:25,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:25,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:25,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:25,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:25,223 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 8 states. [2020-12-23 07:35:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:25,435 INFO L93 Difference]: Finished difference Result 148 states and 170 transitions. [2020-12-23 07:35:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:35:25,435 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-23 07:35:25,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:25,437 INFO L225 Difference]: With dead ends: 148 [2020-12-23 07:35:25,437 INFO L226 Difference]: Without dead ends: 136 [2020-12-23 07:35:25,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:35:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-23 07:35:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2020-12-23 07:35:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-23 07:35:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2020-12-23 07:35:25,453 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 23 [2020-12-23 07:35:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:25,453 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2020-12-23 07:35:25,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2020-12-23 07:35:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 07:35:25,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:25,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:25,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:25,669 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 07:35:25,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:25,671 INFO L82 PathProgramCache]: Analyzing trace with hash -559475920, now seen corresponding path program 1 times [2020-12-23 07:35:25,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:25,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112480048] [2020-12-23 07:35:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:25,681 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:25,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605061352] [2020-12-23 07:35:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:25,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:35:25,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:25,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112480048] [2020-12-23 07:35:25,911 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:25,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605061352] [2020-12-23 07:35:25,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:25,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:35:25,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59997409] [2020-12-23 07:35:25,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:25,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:25,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:25,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:25,914 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand 8 states. [2020-12-23 07:35:26,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:26,223 INFO L93 Difference]: Finished difference Result 157 states and 183 transitions. [2020-12-23 07:35:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:35:26,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-12-23 07:35:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:26,226 INFO L225 Difference]: With dead ends: 157 [2020-12-23 07:35:26,226 INFO L226 Difference]: Without dead ends: 153 [2020-12-23 07:35:26,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 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 07:35:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-23 07:35:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 132. [2020-12-23 07:35:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 07:35:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2020-12-23 07:35:26,243 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 28 [2020-12-23 07:35:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:26,243 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2020-12-23 07:35:26,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2020-12-23 07:35:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 07:35:26,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:26,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:26,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:26,459 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 07:35:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:26,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1572440212, now seen corresponding path program 2 times [2020-12-23 07:35:26,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:26,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629733446] [2020-12-23 07:35:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:26,475 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:26,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984576746] [2020-12-23 07:35:26,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:26,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:35:26,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:26,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:35:26,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:26,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:26,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629733446] [2020-12-23 07:35:26,707 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:26,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984576746] [2020-12-23 07:35:26,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:26,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:35:26,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193952818] [2020-12-23 07:35:26,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:35:26,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:26,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:35:26,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:26,709 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand 9 states. [2020-12-23 07:35:27,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:27,051 INFO L93 Difference]: Finished difference Result 161 states and 190 transitions. [2020-12-23 07:35:27,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:35:27,052 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-12-23 07:35:27,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:27,053 INFO L225 Difference]: With dead ends: 161 [2020-12-23 07:35:27,053 INFO L226 Difference]: Without dead ends: 151 [2020-12-23 07:35:27,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:35:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-23 07:35:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2020-12-23 07:35:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-23 07:35:27,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2020-12-23 07:35:27,072 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 28 [2020-12-23 07:35:27,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:27,072 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2020-12-23 07:35:27,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:35:27,072 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2020-12-23 07:35:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:35:27,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:27,073 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:27,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:35:27,289 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 07:35:27,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:27,290 INFO L82 PathProgramCache]: Analyzing trace with hash -221158463, now seen corresponding path program 2 times [2020-12-23 07:35:27,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:27,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841149376] [2020-12-23 07:35:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:27,314 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:27,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936605186] [2020-12-23 07:35:27,315 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 07:35:27,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:35:27,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:27,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:35:27,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:27,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841149376] [2020-12-23 07:35:27,473 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:27,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936605186] [2020-12-23 07:35:27,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:27,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:35:27,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949320200] [2020-12-23 07:35:27,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:35:27,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:27,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:35:27,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:35:27,478 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand 6 states. [2020-12-23 07:35:27,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:27,531 INFO L93 Difference]: Finished difference Result 162 states and 193 transitions. [2020-12-23 07:35:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:35:27,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-12-23 07:35:27,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:27,533 INFO L225 Difference]: With dead ends: 162 [2020-12-23 07:35:27,533 INFO L226 Difference]: Without dead ends: 144 [2020-12-23 07:35:27,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:27,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-23 07:35:27,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-12-23 07:35:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-23 07:35:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2020-12-23 07:35:27,553 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 29 [2020-12-23 07:35:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:27,554 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2020-12-23 07:35:27,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:35:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2020-12-23 07:35:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:35:27,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:27,557 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:27,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:35:27,770 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 07:35:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:27,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1734668817, now seen corresponding path program 2 times [2020-12-23 07:35:27,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:27,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981527365] [2020-12-23 07:35:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:27,791 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:27,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441450574] [2020-12-23 07:35:27,792 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 07:35:27,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:35:27,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:27,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-23 07:35:27,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:28,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981527365] [2020-12-23 07:35:28,097 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:28,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441450574] [2020-12-23 07:35:28,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:28,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:35:28,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144087082] [2020-12-23 07:35:28,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:35:28,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:28,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:35:28,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:28,099 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand 9 states. [2020-12-23 07:35:28,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:28,580 INFO L93 Difference]: Finished difference Result 186 states and 216 transitions. [2020-12-23 07:35:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:35:28,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-23 07:35:28,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:28,582 INFO L225 Difference]: With dead ends: 186 [2020-12-23 07:35:28,583 INFO L226 Difference]: Without dead ends: 184 [2020-12-23 07:35:28,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:35:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-12-23 07:35:28,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 147. [2020-12-23 07:35:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-23 07:35:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-12-23 07:35:28,605 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 30 [2020-12-23 07:35:28,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:28,606 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-12-23 07:35:28,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:35:28,606 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-12-23 07:35:28,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:35:28,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:28,607 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:28,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:35:28,822 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 07:35:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:28,823 INFO L82 PathProgramCache]: Analyzing trace with hash 713600463, now seen corresponding path program 1 times [2020-12-23 07:35:28,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:28,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622150812] [2020-12-23 07:35:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:28,835 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:28,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191050867] [2020-12-23 07:35:28,836 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 07:35:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:28,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 07:35:28,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:29,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:29,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622150812] [2020-12-23 07:35:29,096 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:29,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191050867] [2020-12-23 07:35:29,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:29,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:35:29,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578372803] [2020-12-23 07:35:29,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:35:29,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:29,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:35:29,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:29,098 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 9 states. [2020-12-23 07:35:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:29,472 INFO L93 Difference]: Finished difference Result 183 states and 212 transitions. [2020-12-23 07:35:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:35:29,473 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-23 07:35:29,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:29,474 INFO L225 Difference]: With dead ends: 183 [2020-12-23 07:35:29,474 INFO L226 Difference]: Without dead ends: 181 [2020-12-23 07:35:29,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:35:29,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-12-23 07:35:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 147. [2020-12-23 07:35:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-23 07:35:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2020-12-23 07:35:29,492 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 30 [2020-12-23 07:35:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:29,492 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2020-12-23 07:35:29,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:35:29,493 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2020-12-23 07:35:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:35:29,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:29,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:29,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:29,707 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 07:35:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:29,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1249637014, now seen corresponding path program 1 times [2020-12-23 07:35:29,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:29,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149557133] [2020-12-23 07:35:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:29,718 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:29,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636826164] [2020-12-23 07:35:29,718 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 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 07:35:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:29,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:35:29,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:29,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149557133] [2020-12-23 07:35:29,964 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:29,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636826164] [2020-12-23 07:35:29,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:29,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:35:29,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403776404] [2020-12-23 07:35:29,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:29,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:29,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:29,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:29,971 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand 8 states. [2020-12-23 07:35:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:30,292 INFO L93 Difference]: Finished difference Result 191 states and 220 transitions. [2020-12-23 07:35:30,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:35:30,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-23 07:35:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:30,294 INFO L225 Difference]: With dead ends: 191 [2020-12-23 07:35:30,295 INFO L226 Difference]: Without dead ends: 179 [2020-12-23 07:35:30,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 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 07:35:30,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-23 07:35:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 139. [2020-12-23 07:35:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-23 07:35:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2020-12-23 07:35:30,316 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 32 [2020-12-23 07:35:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:30,316 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2020-12-23 07:35:30,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2020-12-23 07:35:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:35:30,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:30,317 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:30,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:35:30,531 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 07:35:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:30,532 INFO L82 PathProgramCache]: Analyzing trace with hash -744507692, now seen corresponding path program 2 times [2020-12-23 07:35:30,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:30,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815532749] [2020-12-23 07:35:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:30,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:30,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628396590] [2020-12-23 07:35:30,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:30,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:35:30,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:30,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-23 07:35:30,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:30,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815532749] [2020-12-23 07:35:30,882 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:30,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628396590] [2020-12-23 07:35:30,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:30,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:35:30,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567235166] [2020-12-23 07:35:30,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:35:30,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:30,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:35:30,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:35:30,890 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 10 states. [2020-12-23 07:35:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:31,106 INFO L93 Difference]: Finished difference Result 195 states and 226 transitions. [2020-12-23 07:35:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:35:31,107 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-12-23 07:35:31,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:31,108 INFO L225 Difference]: With dead ends: 195 [2020-12-23 07:35:31,109 INFO L226 Difference]: Without dead ends: 183 [2020-12-23 07:35:31,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:35:31,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-12-23 07:35:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2020-12-23 07:35:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-23 07:35:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-12-23 07:35:31,133 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 32 [2020-12-23 07:35:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:31,133 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-12-23 07:35:31,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:35:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-12-23 07:35:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:35:31,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:31,135 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:31,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:35:31,350 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 07:35:31,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:31,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1488876978, now seen corresponding path program 3 times [2020-12-23 07:35:31,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:31,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521234086] [2020-12-23 07:35:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:31,359 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:31,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735230321] [2020-12-23 07:35:31,359 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 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 07:35:31,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:35:31,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:31,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:35:31,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:31,638 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-23 07:35:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 07:35:31,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521234086] [2020-12-23 07:35:31,658 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:31,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735230321] [2020-12-23 07:35:31,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:31,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:35:31,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735677] [2020-12-23 07:35:31,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:35:31,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:31,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:35:31,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:35:31,660 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 7 states. [2020-12-23 07:35:31,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:31,860 INFO L93 Difference]: Finished difference Result 194 states and 219 transitions. [2020-12-23 07:35:31,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:35:31,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-23 07:35:31,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:31,862 INFO L225 Difference]: With dead ends: 194 [2020-12-23 07:35:31,862 INFO L226 Difference]: Without dead ends: 190 [2020-12-23 07:35:31,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:31,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-23 07:35:31,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-12-23 07:35:31,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-23 07:35:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 182 transitions. [2020-12-23 07:35:31,883 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 182 transitions. Word has length 37 [2020-12-23 07:35:31,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:31,883 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 182 transitions. [2020-12-23 07:35:31,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:35:31,883 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 182 transitions. [2020-12-23 07:35:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:35:31,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:31,884 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:32,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:32,098 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 07:35:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:32,099 INFO L82 PathProgramCache]: Analyzing trace with hash 475912686, now seen corresponding path program 4 times [2020-12-23 07:35:32,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:32,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298910176] [2020-12-23 07:35:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:32,108 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:32,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965108019] [2020-12-23 07:35:32,108 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 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 07:35:32,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:35:32,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:32,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:35:32,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:32,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298910176] [2020-12-23 07:35:32,323 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:32,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965108019] [2020-12-23 07:35:32,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:32,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:35:32,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344647467] [2020-12-23 07:35:32,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:35:32,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:32,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:35:32,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:32,325 INFO L87 Difference]: Start difference. First operand 154 states and 182 transitions. Second operand 9 states. [2020-12-23 07:35:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:32,864 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2020-12-23 07:35:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:35:32,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-23 07:35:32,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:32,866 INFO L225 Difference]: With dead ends: 192 [2020-12-23 07:35:32,866 INFO L226 Difference]: Without dead ends: 182 [2020-12-23 07:35:32,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:35:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-23 07:35:32,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2020-12-23 07:35:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-12-23 07:35:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-12-23 07:35:32,910 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 37 [2020-12-23 07:35:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:32,910 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-12-23 07:35:32,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:35:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-12-23 07:35:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:35:32,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:32,911 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:33,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:33,125 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 07:35:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:33,125 INFO L82 PathProgramCache]: Analyzing trace with hash 477759728, now seen corresponding path program 5 times [2020-12-23 07:35:33,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:33,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653482170] [2020-12-23 07:35:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:33,141 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:33,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791190647] [2020-12-23 07:35:33,141 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 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 07:35:54,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 07:35:54,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:54,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:35:54,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:54,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653482170] [2020-12-23 07:35:54,555 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:54,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791190647] [2020-12-23 07:35:54,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:54,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:35:54,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405496117] [2020-12-23 07:35:54,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:35:54,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:54,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:35:54,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:35:54,557 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 10 states. [2020-12-23 07:35:55,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:55,021 INFO L93 Difference]: Finished difference Result 201 states and 234 transitions. [2020-12-23 07:35:55,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:35:55,022 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-12-23 07:35:55,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:55,023 INFO L225 Difference]: With dead ends: 201 [2020-12-23 07:35:55,023 INFO L226 Difference]: Without dead ends: 197 [2020-12-23 07:35:55,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:35:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-23 07:35:55,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2020-12-23 07:35:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-12-23 07:35:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-12-23 07:35:55,048 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 37 [2020-12-23 07:35:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:55,048 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-12-23 07:35:55,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:35:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-12-23 07:35:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:35:55,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:55,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:55,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:55,252 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 07:35:55,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:55,252 INFO L82 PathProgramCache]: Analyzing trace with hash -318408398, now seen corresponding path program 6 times [2020-12-23 07:35:55,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:55,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205481205] [2020-12-23 07:35:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:55,261 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:55,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809889261] [2020-12-23 07:35:55,261 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 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 07:35:55,327 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-23 07:35:55,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:55,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:35:55,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 07:35:55,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205481205] [2020-12-23 07:35:55,446 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:55,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809889261] [2020-12-23 07:35:55,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:55,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:35:55,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11981890] [2020-12-23 07:35:55,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:35:55,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:55,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:35:55,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:35:55,451 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 7 states. [2020-12-23 07:35:55,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:55,657 INFO L93 Difference]: Finished difference Result 200 states and 233 transitions. [2020-12-23 07:35:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:35:55,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-23 07:35:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:55,659 INFO L225 Difference]: With dead ends: 200 [2020-12-23 07:35:55,659 INFO L226 Difference]: Without dead ends: 190 [2020-12-23 07:35:55,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-23 07:35:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2020-12-23 07:35:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 07:35:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 211 transitions. [2020-12-23 07:35:55,684 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 211 transitions. Word has length 37 [2020-12-23 07:35:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:55,684 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 211 transitions. [2020-12-23 07:35:55,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:35:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 211 transitions. [2020-12-23 07:35:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:35:55,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:55,685 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:55,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:35:55,900 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:35:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:55,900 INFO L82 PathProgramCache]: Analyzing trace with hash -316561356, now seen corresponding path program 7 times [2020-12-23 07:35:55,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:55,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036683183] [2020-12-23 07:35:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:55,909 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:55,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711494783] [2020-12-23 07:35:55,909 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 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 07:35:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:55,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:35:55,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:56,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036683183] [2020-12-23 07:35:56,133 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:56,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711494783] [2020-12-23 07:35:56,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:56,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:35:56,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282440358] [2020-12-23 07:35:56,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:35:56,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:56,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:35:56,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:35:56,135 INFO L87 Difference]: Start difference. First operand 177 states and 211 transitions. Second operand 10 states. [2020-12-23 07:35:56,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:56,565 INFO L93 Difference]: Finished difference Result 214 states and 251 transitions. [2020-12-23 07:35:56,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:35:56,565 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-12-23 07:35:56,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:56,567 INFO L225 Difference]: With dead ends: 214 [2020-12-23 07:35:56,567 INFO L226 Difference]: Without dead ends: 210 [2020-12-23 07:35:56,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:35:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-12-23 07:35:56,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 181. [2020-12-23 07:35:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-23 07:35:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2020-12-23 07:35:56,593 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 37 [2020-12-23 07:35:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:56,593 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2020-12-23 07:35:56,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:35:56,594 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2020-12-23 07:35:56,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:35:56,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:56,594 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:56,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 07:35:56,808 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:35:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:56,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1329525648, now seen corresponding path program 8 times [2020-12-23 07:35:56,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:56,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479561099] [2020-12-23 07:35:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:56,817 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:56,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365985465] [2020-12-23 07:35:56,817 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:56,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:35:56,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:56,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:35:56,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:57,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479561099] [2020-12-23 07:35:57,046 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:57,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365985465] [2020-12-23 07:35:57,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:57,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:35:57,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685804102] [2020-12-23 07:35:57,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:35:57,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:57,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:35:57,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:35:57,048 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand 10 states. [2020-12-23 07:35:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:57,471 INFO L93 Difference]: Finished difference Result 210 states and 247 transitions. [2020-12-23 07:35:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:35:57,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-12-23 07:35:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:57,473 INFO L225 Difference]: With dead ends: 210 [2020-12-23 07:35:57,473 INFO L226 Difference]: Without dead ends: 200 [2020-12-23 07:35:57,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:35:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-23 07:35:57,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 181. [2020-12-23 07:35:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-23 07:35:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2020-12-23 07:35:57,497 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 37 [2020-12-23 07:35:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:57,497 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2020-12-23 07:35:57,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:35:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2020-12-23 07:35:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:35:57,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:57,498 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:57,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:57,713 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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 07:35:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:57,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1146728065, now seen corresponding path program 3 times [2020-12-23 07:35:57,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:57,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179582920] [2020-12-23 07:35:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:57,721 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:57,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456555774] [2020-12-23 07:35:57,722 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:57,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 07:35:57,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:57,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:35:57,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:35:57,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179582920] [2020-12-23 07:35:57,843 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:57,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456555774] [2020-12-23 07:35:57,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:57,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:35:57,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308794768] [2020-12-23 07:35:57,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:35:57,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:57,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:35:57,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:35:57,844 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand 7 states. [2020-12-23 07:35:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:57,910 INFO L93 Difference]: Finished difference Result 211 states and 251 transitions. [2020-12-23 07:35:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:35:57,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-12-23 07:35:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:57,912 INFO L225 Difference]: With dead ends: 211 [2020-12-23 07:35:57,912 INFO L226 Difference]: Without dead ends: 193 [2020-12-23 07:35:57,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:35:57,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-12-23 07:35:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2020-12-23 07:35:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-12-23 07:35:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 228 transitions. [2020-12-23 07:35:57,955 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 228 transitions. Word has length 38 [2020-12-23 07:35:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:57,955 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 228 transitions. [2020-12-23 07:35:57,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:35:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 228 transitions. [2020-12-23 07:35:57,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:35:57,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:57,956 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:58,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 07:35:58,170 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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 07:35:58,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:58,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1188185069, now seen corresponding path program 3 times [2020-12-23 07:35:58,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:58,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282851095] [2020-12-23 07:35:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:58,178 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:58,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958546522] [2020-12-23 07:35:58,179 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:58,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:35:58,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:58,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:35:58,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 07:35:58,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282851095] [2020-12-23 07:35:58,469 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:58,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958546522] [2020-12-23 07:35:58,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:58,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:35:58,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166629344] [2020-12-23 07:35:58,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:35:58,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:58,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:35:58,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:35:58,471 INFO L87 Difference]: Start difference. First operand 193 states and 228 transitions. Second operand 11 states. [2020-12-23 07:36:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:36:02,833 INFO L93 Difference]: Finished difference Result 253 states and 290 transitions. [2020-12-23 07:36:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:36:02,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-12-23 07:36:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:36:02,835 INFO L225 Difference]: With dead ends: 253 [2020-12-23 07:36:02,835 INFO L226 Difference]: Without dead ends: 251 [2020-12-23 07:36:02,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:36:02,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-12-23 07:36:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 193. [2020-12-23 07:36:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-12-23 07:36:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 227 transitions. [2020-12-23 07:36:02,864 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 227 transitions. Word has length 39 [2020-12-23 07:36:02,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:36:02,864 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 227 transitions. [2020-12-23 07:36:02,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:36:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 227 transitions. [2020-12-23 07:36:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:36:02,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:36:02,865 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:36:03,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:36:03,080 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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 07:36:03,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:36:03,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2085713873, now seen corresponding path program 2 times [2020-12-23 07:36:03,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:36:03,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495263491] [2020-12-23 07:36:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:36:03,088 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:36:03,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238734057] [2020-12-23 07:36:03,089 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:36:03,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:36:03,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:36:03,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-23 07:36:03,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:36:05,656 WARN L197 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-12-23 07:36:09,904 WARN L197 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-23 07:36:09,942 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:36:09,946 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:36:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:36:10,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495263491] [2020-12-23 07:36:10,881 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:36:10,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238734057] [2020-12-23 07:36:10,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:36:10,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:36:10,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609419884] [2020-12-23 07:36:10,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:36:10,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:36:10,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:36:10,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=116, Unknown=1, NotChecked=0, Total=156 [2020-12-23 07:36:10,883 INFO L87 Difference]: Start difference. First operand 193 states and 227 transitions. Second operand 13 states. [2020-12-23 07:36:16,104 WARN L197 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-12-23 07:36:23,976 WARN L197 SmtUtils]: Spent 6.95 s on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-12-23 07:36:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:36:26,298 INFO L93 Difference]: Finished difference Result 205 states and 239 transitions. [2020-12-23 07:36:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:36:26,299 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-12-23 07:36:26,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:36:26,301 INFO L225 Difference]: With dead ends: 205 [2020-12-23 07:36:26,301 INFO L226 Difference]: Without dead ends: 203 [2020-12-23 07:36:26,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=113, Invalid=392, Unknown=1, NotChecked=0, Total=506 [2020-12-23 07:36:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-23 07:36:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 198. [2020-12-23 07:36:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-23 07:36:26,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 232 transitions. [2020-12-23 07:36:26,330 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 232 transitions. Word has length 39 [2020-12-23 07:36:26,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:36:26,330 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 232 transitions. [2020-12-23 07:36:26,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:36:26,330 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 232 transitions. [2020-12-23 07:36:26,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:36:26,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:36:26,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:36:26,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 07:36:26,532 INFO L429 AbstractCegarLoop]: === Iteration 28 === [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 07:36:26,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:36:26,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1047636459, now seen corresponding path program 3 times [2020-12-23 07:36:26,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:36:26,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352592458] [2020-12-23 07:36:26,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:36:26,540 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:36:26,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368595337] [2020-12-23 07:36:26,540 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:36:26,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:36:26,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:36:26,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:36:26,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:36:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 07:36:28,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352592458] [2020-12-23 07:36:28,494 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:36:28,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368595337] [2020-12-23 07:36:28,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:36:28,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:36:28,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175850061] [2020-12-23 07:36:28,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:36:28,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:36:28,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:36:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:36:28,498 INFO L87 Difference]: Start difference. First operand 198 states and 232 transitions. Second operand 10 states. [2020-12-23 07:36:46,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:36:46,979 INFO L93 Difference]: Finished difference Result 225 states and 257 transitions. [2020-12-23 07:36:46,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:36:46,979 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-12-23 07:36:46,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:36:46,981 INFO L225 Difference]: With dead ends: 225 [2020-12-23 07:36:46,981 INFO L226 Difference]: Without dead ends: 199 [2020-12-23 07:36:46,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=62, Invalid=146, Unknown=2, NotChecked=0, Total=210 [2020-12-23 07:36:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-12-23 07:36:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 164. [2020-12-23 07:36:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-23 07:36:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 188 transitions. [2020-12-23 07:36:47,008 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 188 transitions. Word has length 39 [2020-12-23 07:36:47,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:36:47,008 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 188 transitions. [2020-12-23 07:36:47,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:36:47,009 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 188 transitions. [2020-12-23 07:36:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 07:36:47,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:36:47,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:36:47,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 07:36:47,221 INFO L429 AbstractCegarLoop]: === Iteration 29 === [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 07:36:47,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:36:47,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1295664152, now seen corresponding path program 2 times [2020-12-23 07:36:47,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:36:47,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267793415] [2020-12-23 07:36:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:36:47,228 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:36:47,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143248824] [2020-12-23 07:36:47,229 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:36:47,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:36:47,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:36:47,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 62 conjunts are in the unsatisfiable core [2020-12-23 07:36:47,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:36:53,672 WARN L197 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 31 [2020-12-23 07:36:55,721 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0)) (.cse3 (* c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0))) (let ((.cse0 (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0)) (.cse1 (+ .cse2 .cse3 c_ULTIMATE.start_main_~x~0))) (and (< (+ .cse0 c_ULTIMATE.start_main_~b~0) .cse1) (= (+ (* 2 c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~p~0) 1) (= .cse0 (+ .cse2 .cse3 c_ULTIMATE.start_main_~b~0)) (<= 1 c_ULTIMATE.start_main_~x~0) (= c_ULTIMATE.start_main_~q~0 0) (= (+ (* 2 c_ULTIMATE.start_main_~s~0) c_ULTIMATE.start_main_~r~0) 0) (= (+ .cse0 c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~a~0) .cse1) (= c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~y~0) (not (= c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~a~0))))) is different from false [2020-12-23 07:37:22,734 WARN L197 SmtUtils]: Spent 23.45 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-23 07:37:22,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267793415] [2020-12-23 07:37:22,755 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:22,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143248824] [2020-12-23 07:37:22,755 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:37:22,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:22,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:37:22,755 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:37:22,755 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:37:22,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 07:37:23,006 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:37:23,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:37:23 BoogieIcfgContainer [2020-12-23 07:37:23,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:37:23,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:37:23,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:37:23,010 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:37:23,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:35:19" (3/4) ... [2020-12-23 07:37:23,016 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:37:23,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:37:23,017 INFO L168 Benchmark]: Toolchain (without parser) took 124183.65 ms. Allocated memory was 166.7 MB in the beginning and 289.4 MB in the end (delta: 122.7 MB). Free memory was 142.5 MB in the beginning and 102.8 MB in the end (delta: 39.8 MB). Peak memory consumption was 163.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:37:23,017 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 166.7 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:37:23,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.28 ms. Allocated memory is still 166.7 MB. Free memory was 142.1 MB in the beginning and 132.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:37:23,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.05 ms. Allocated memory is still 166.7 MB. Free memory was 131.9 MB in the beginning and 130.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:37:23,018 INFO L168 Benchmark]: Boogie Preprocessor took 28.01 ms. Allocated memory is still 166.7 MB. Free memory was 130.4 MB in the beginning and 129.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:37:23,019 INFO L168 Benchmark]: RCFGBuilder took 498.12 ms. Allocated memory is still 166.7 MB. Free memory was 129.1 MB in the beginning and 147.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:37:23,019 INFO L168 Benchmark]: TraceAbstraction took 123309.24 ms. Allocated memory was 166.7 MB in the beginning and 289.4 MB in the end (delta: 122.7 MB). Free memory was 147.9 MB in the beginning and 103.3 MB in the end (delta: 44.7 MB). Peak memory consumption was 167.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:37:23,020 INFO L168 Benchmark]: Witness Printer took 6.88 ms. Allocated memory is still 289.4 MB. Free memory was 103.3 MB in the beginning and 102.8 MB in the end (delta: 517.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:37:23,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 166.7 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.28 ms. Allocated memory is still 166.7 MB. Free memory was 142.1 MB in the beginning and 132.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.05 ms. Allocated memory is still 166.7 MB. Free memory was 131.9 MB in the beginning and 130.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.01 ms. Allocated memory is still 166.7 MB. Free memory was 130.4 MB in the beginning and 129.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 498.12 ms. Allocated memory is still 166.7 MB. Free memory was 129.1 MB in the beginning and 147.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 123309.24 ms. Allocated memory was 166.7 MB in the beginning and 289.4 MB in the end (delta: 122.7 MB). Free memory was 147.9 MB in the beginning and 103.3 MB in the end (delta: 44.7 MB). Peak memory consumption was 167.3 MB. Max. memory is 8.0 GB. * Witness Printer took 6.88 ms. Allocated memory is still 289.4 MB. Free memory was 103.3 MB in the beginning and 102.8 MB in the end (delta: 517.1 kB). 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: [L18] int counter = 0; [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L34] EXPR counter++ [L34] COND TRUE counter++<10 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L39] COND FALSE !(!(a != b)) [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s [L34] EXPR counter++ [L34] COND TRUE counter++<10 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L39] COND FALSE !(!(a != b)) [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s [L34] EXPR counter++ [L34] COND TRUE counter++<10 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L39] COND FALSE !(!(a != b)) [L42] COND FALSE !(a > b) [L47] b = b - a [L48] q = q - p [L49] s = s - r [L34] EXPR counter++ [L34] COND TRUE counter++<10 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 123.1s, OverallIterations: 29, TraceHistogramMax: 4, AutomataDifference: 44.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1102 SDtfs, 1942 SDslu, 3476 SDs, 0 SdLazy, 3559 SolverSat, 357 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 23.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 845 GetRequests, 564 SyntacticMatches, 2 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 30.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 28 MinimizatonAttempts, 583 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 21.8s SatisfiabilityAnalysisTime, 13.2s InterpolantComputationTime, 762 NumberOfCodeBlocks, 697 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 734 ConstructedInterpolants, 4 QuantifiedInterpolants, 301025 SizeOfPredicates, 255 NumberOfNonLiveVariables, 3169 ConjunctsInSsa, 758 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 108/519 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...