/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_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:35:41,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:35:41,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:35:41,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:35:41,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:35:41,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:35:41,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:35:41,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:35:41,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:35:41,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:35:41,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:35:41,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:35:41,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:35:41,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:35:41,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:35:41,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:35:41,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:35:41,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:35:41,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:35:41,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:35:41,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:35:41,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:35:41,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:35:41,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:35:41,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:35:41,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:35:41,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:35:41,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:35:41,739 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 07:35:41,766 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:35:41,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:35:41,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:35:41,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:35:41,768 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:35:41,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:35:41,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:35:41,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:35:41,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:35:41,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:35:41,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:35:41,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:35:41,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:35:41,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:35:41,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:35:41,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:35:41,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:35:41,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:35:41,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:35:41,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:35:41,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:35:41,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:35:41,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:35:41,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:35:41,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:35:41,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:35:42,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:35:42,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:35:42,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:35:42,220 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:35:42,222 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:35:42,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c [2020-12-23 07:35:42,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2d6b085b7/70b444fc5ac848d58239f7e5f192e9d4/FLAG4220ad534 [2020-12-23 07:35:43,054 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:35:43,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c [2020-12-23 07:35:43,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2d6b085b7/70b444fc5ac848d58239f7e5f192e9d4/FLAG4220ad534 [2020-12-23 07:35:43,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2d6b085b7/70b444fc5ac848d58239f7e5f192e9d4 [2020-12-23 07:35:43,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:35:43,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:35:43,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:35:43,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:35:43,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:35:43,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a013637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43, skipping insertion in model container [2020-12-23 07:35:43,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:35:43,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:35:43,618 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_unwindbound5.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 07:35:43,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:35:43,653 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:35:43,668 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_unwindbound5.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 07:35:43,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:35:43,699 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:35:43,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43 WrapperNode [2020-12-23 07:35:43,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:35:43,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:35:43,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:35:43,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:35:43,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:35:43,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:35:43,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:35:43,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:35:43,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (1/1) ... [2020-12-23 07:35:43,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:35:43,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:35:43,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:35:43,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:35:43,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (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 07:35:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:35:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:35:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:35:43,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:35:44,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:35:44,201 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-23 07:35:44,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:35:44 BoogieIcfgContainer [2020-12-23 07:35:44,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:35:44,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:35:44,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:35:44,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:35:44,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:35:43" (1/3) ... [2020-12-23 07:35:44,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa88773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:35:44, skipping insertion in model container [2020-12-23 07:35:44,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:35:43" (2/3) ... [2020-12-23 07:35:44,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa88773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:35:44, skipping insertion in model container [2020-12-23 07:35:44,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:35:44" (3/3) ... [2020-12-23 07:35:44,216 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound5.c [2020-12-23 07:35:44,225 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:35:44,231 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:35:44,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:35:44,294 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:35:44,295 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:35:44,295 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:35:44,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:35:44,295 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:35:44,296 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:35:44,296 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:35:44,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:35:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 07:35:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:35:44,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:44,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:44,345 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 07:35:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:44,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2020-12-23 07:35:44,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:44,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547452857] [2020-12-23 07:35:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:44,624 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 07:35:44,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547452857] [2020-12-23 07:35:44,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:44,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:35:44,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377270250] [2020-12-23 07:35:44,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:35:44,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:44,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:35:44,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:35:44,654 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 07:35:44,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:44,679 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-12-23 07:35:44,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:35:44,681 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 07:35:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:44,691 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:35:44,692 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:35:44,695 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 07:35:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:35:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:35:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:35:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:35:44,740 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2020-12-23 07:35:44,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:44,741 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:35:44,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:35:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:35:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:35:44,742 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:44,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:44,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:35:44,743 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 07:35:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:44,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-12-23 07:35:44,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:44,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015684067] [2020-12-23 07:35:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:44,767 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:44,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130628742] [2020-12-23 07:35:44,768 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 07:35:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:44,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:35:44,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:45,043 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 07:35:45,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015684067] [2020-12-23 07:35:45,044 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:45,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130628742] [2020-12-23 07:35:45,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:45,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:35:45,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343128973] [2020-12-23 07:35:45,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:35:45,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:45,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:35:45,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:35:45,048 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-12-23 07:35:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:45,241 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-12-23 07:35:45,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:35:45,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 07:35:45,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:45,244 INFO L225 Difference]: With dead ends: 68 [2020-12-23 07:35:45,244 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 07:35:45,245 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 07:35:45,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 07:35:45,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-12-23 07:35:45,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 07:35:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-12-23 07:35:45,258 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 10 [2020-12-23 07:35:45,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:45,259 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-12-23 07:35:45,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:35:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-12-23 07:35:45,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:35:45,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:45,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:45,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:35:45,474 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 07:35:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:45,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1507402239, now seen corresponding path program 1 times [2020-12-23 07:35:45,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:45,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439999683] [2020-12-23 07:35:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:45,536 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 07:35:45,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439999683] [2020-12-23 07:35:45,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:45,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:35:45,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595398181] [2020-12-23 07:35:45,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:35:45,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:45,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:35:45,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:35:45,539 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 4 states. [2020-12-23 07:35:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:45,558 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-12-23 07:35:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:35:45,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 07:35:45,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:45,560 INFO L225 Difference]: With dead ends: 68 [2020-12-23 07:35:45,561 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:35:45,561 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 07:35:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:35:45,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-23 07:35:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:35:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-12-23 07:35:45,572 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 11 [2020-12-23 07:35:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:45,572 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-12-23 07:35:45,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:35:45,573 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-12-23 07:35:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:35:45,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:45,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:45,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:35:45,574 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 07:35:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:45,574 INFO L82 PathProgramCache]: Analyzing trace with hash 515817425, now seen corresponding path program 1 times [2020-12-23 07:35:45,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:45,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721257883] [2020-12-23 07:35:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:45,590 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:45,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847899249] [2020-12-23 07:35:45,591 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 07:35:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:45,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:35:45,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:45,747 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 07:35:45,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721257883] [2020-12-23 07:35:45,747 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:45,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847899249] [2020-12-23 07:35:45,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:45,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:35:45,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213259749] [2020-12-23 07:35:45,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:45,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:45,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:45,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:45,750 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 8 states. [2020-12-23 07:35:45,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:45,992 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2020-12-23 07:35:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:35:45,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-23 07:35:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:46,001 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:35:46,001 INFO L226 Difference]: Without dead ends: 96 [2020-12-23 07:35:46,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:35:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-23 07:35:46,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2020-12-23 07:35:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 07:35:46,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2020-12-23 07:35:46,018 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 12 [2020-12-23 07:35:46,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:46,018 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2020-12-23 07:35:46,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2020-12-23 07:35:46,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:35:46,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:46,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:35:46,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:46,234 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 07:35:46,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:46,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1779462740, now seen corresponding path program 1 times [2020-12-23 07:35:46,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:46,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837934468] [2020-12-23 07:35:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:46,258 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:46,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918280265] [2020-12-23 07:35:46,260 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 07:35:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:46,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:35:46,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:46,368 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 07:35:46,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837934468] [2020-12-23 07:35:46,369 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:46,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918280265] [2020-12-23 07:35:46,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:46,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:35:46,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501487706] [2020-12-23 07:35:46,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:35:46,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:46,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:35:46,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:35:46,372 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand 6 states. [2020-12-23 07:35:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:46,498 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2020-12-23 07:35:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:35:46,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-23 07:35:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:46,500 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:35:46,500 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:35:46,501 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 07:35:46,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:35:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-12-23 07:35:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-23 07:35:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-12-23 07:35:46,514 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 14 [2020-12-23 07:35:46,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:46,514 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-12-23 07:35:46,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:35:46,514 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-12-23 07:35:46,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:35:46,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:46,515 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 07:35:46,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:46,729 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 07:35:46,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:46,730 INFO L82 PathProgramCache]: Analyzing trace with hash -801918668, now seen corresponding path program 1 times [2020-12-23 07:35:46,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:46,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235738039] [2020-12-23 07:35:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:46,745 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:46,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941500434] [2020-12-23 07:35:46,745 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 07:35:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:46,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:35:46,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:46,823 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 07:35:46,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235738039] [2020-12-23 07:35:46,823 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:46,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941500434] [2020-12-23 07:35:46,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:46,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:35:46,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237691711] [2020-12-23 07:35:46,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:35:46,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:46,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:35:46,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:35:46,826 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2020-12-23 07:35:46,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:46,898 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2020-12-23 07:35:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:35:46,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 07:35:46,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:46,900 INFO L225 Difference]: With dead ends: 88 [2020-12-23 07:35:46,900 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 07:35:46,900 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 07:35:46,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 07:35:46,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2020-12-23 07:35:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-23 07:35:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-12-23 07:35:46,912 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 17 [2020-12-23 07:35:46,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:46,912 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-12-23 07:35:46,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:35:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-12-23 07:35:46,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:35:46,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:46,913 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 07:35:47,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:47,128 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 07:35:47,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:47,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1844536457, now seen corresponding path program 1 times [2020-12-23 07:35:47,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:47,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365974467] [2020-12-23 07:35:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:47,149 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:47,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118989045] [2020-12-23 07:35:47,151 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 07:35:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:47,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 07:35:47,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:47,325 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 07:35:47,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365974467] [2020-12-23 07:35:47,326 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:47,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118989045] [2020-12-23 07:35:47,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:35:47,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:35:47,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837307412] [2020-12-23 07:35:47,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:47,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:47,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:47,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:47,329 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 8 states. [2020-12-23 07:35:47,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:47,594 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-12-23 07:35:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:35:47,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-23 07:35:47,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:47,596 INFO L225 Difference]: With dead ends: 111 [2020-12-23 07:35:47,596 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 07:35:47,597 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 07:35:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 07:35:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 64. [2020-12-23 07:35:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 07:35:47,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-12-23 07:35:47,611 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 19 [2020-12-23 07:35:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:47,611 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-12-23 07:35:47,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-12-23 07:35:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:35:47,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:47,614 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 07:35:47,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:35:47,828 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 07:35:47,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:47,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1793740814, now seen corresponding path program 1 times [2020-12-23 07:35:47,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:47,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319796575] [2020-12-23 07:35:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:47,843 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:47,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098098421] [2020-12-23 07:35:47,844 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 07:35:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:47,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:35:47,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:47,981 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 07:35:47,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319796575] [2020-12-23 07:35:47,981 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:47,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098098421] [2020-12-23 07:35:47,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:47,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:35:47,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107872048] [2020-12-23 07:35:47,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:35:47,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:47,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:35:47,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:35:47,984 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 5 states. [2020-12-23 07:35:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:48,096 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-12-23 07:35:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:35:48,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-23 07:35:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:48,098 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:35:48,098 INFO L226 Difference]: Without dead ends: 97 [2020-12-23 07:35:48,099 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 07:35:48,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-23 07:35:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2020-12-23 07:35:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 07:35:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2020-12-23 07:35:48,114 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 19 [2020-12-23 07:35:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:48,114 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2020-12-23 07:35:48,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:35:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2020-12-23 07:35:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:35:48,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:48,116 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 07:35:48,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:48,331 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 07:35:48,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:48,332 INFO L82 PathProgramCache]: Analyzing trace with hash 171335487, now seen corresponding path program 1 times [2020-12-23 07:35:48,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:48,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808053129] [2020-12-23 07:35:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:48,350 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:48,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130976705] [2020-12-23 07:35:48,351 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 07:35:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:48,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:35:48,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:48,448 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 07:35:48,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808053129] [2020-12-23 07:35:48,449 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:48,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130976705] [2020-12-23 07:35:48,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:48,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:35:48,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816344962] [2020-12-23 07:35:48,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:35:48,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:48,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:35:48,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:35:48,452 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 5 states. [2020-12-23 07:35:48,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:48,485 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2020-12-23 07:35:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:35:48,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-23 07:35:48,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:48,487 INFO L225 Difference]: With dead ends: 109 [2020-12-23 07:35:48,487 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 07:35:48,488 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 07:35:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 07:35:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-12-23 07:35:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-23 07:35:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2020-12-23 07:35:48,504 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 20 [2020-12-23 07:35:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:48,504 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2020-12-23 07:35:48,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:35:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2020-12-23 07:35:48,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:35:48,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:48,507 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 07:35:48,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:48,723 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 07:35:48,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:48,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1017079379, now seen corresponding path program 1 times [2020-12-23 07:35:48,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:48,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884024899] [2020-12-23 07:35:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:48,741 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:48,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194503769] [2020-12-23 07:35:48,742 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 07:35:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:48,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:35:48,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:48,949 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 07:35:48,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884024899] [2020-12-23 07:35:48,949 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:48,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194503769] [2020-12-23 07:35:48,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:48,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:35:48,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082432913] [2020-12-23 07:35:48,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:48,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:48,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:48,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:48,952 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand 8 states. [2020-12-23 07:35:49,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:49,183 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2020-12-23 07:35:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:35:49,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-23 07:35:49,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:49,187 INFO L225 Difference]: With dead ends: 133 [2020-12-23 07:35:49,187 INFO L226 Difference]: Without dead ends: 131 [2020-12-23 07:35:49,188 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 07:35:49,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-23 07:35:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2020-12-23 07:35:49,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:35:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-12-23 07:35:49,213 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 21 [2020-12-23 07:35:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:49,215 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-12-23 07:35:49,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-12-23 07:35:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 07:35:49,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:49,221 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 07:35:49,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:35:49,437 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 07:35:49,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:49,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1159045544, now seen corresponding path program 1 times [2020-12-23 07:35:49,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:49,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424055750] [2020-12-23 07:35:49,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:49,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:49,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521684341] [2020-12-23 07:35:49,452 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 07:35:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:49,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:35:49,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:49,693 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 07:35:49,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424055750] [2020-12-23 07:35:49,693 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:49,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521684341] [2020-12-23 07:35:49,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:49,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:35:49,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534469792] [2020-12-23 07:35:49,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:49,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:49,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:49,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:49,696 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 8 states. [2020-12-23 07:35:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:49,922 INFO L93 Difference]: Finished difference Result 148 states and 170 transitions. [2020-12-23 07:35:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:35:49,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-23 07:35:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:49,923 INFO L225 Difference]: With dead ends: 148 [2020-12-23 07:35:49,923 INFO L226 Difference]: Without dead ends: 136 [2020-12-23 07:35:49,924 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 07:35:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-23 07:35:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2020-12-23 07:35:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-23 07:35:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2020-12-23 07:35:49,941 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 23 [2020-12-23 07:35:49,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:49,941 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2020-12-23 07:35:49,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2020-12-23 07:35:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 07:35:49,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:49,942 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 07:35:50,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:50,156 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 07:35:50,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:50,157 INFO L82 PathProgramCache]: Analyzing trace with hash -559475920, now seen corresponding path program 1 times [2020-12-23 07:35:50,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:50,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080963463] [2020-12-23 07:35:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:50,170 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:50,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467402717] [2020-12-23 07:35:50,171 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 07:35:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:50,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:35:50,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:50,393 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 07:35:50,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080963463] [2020-12-23 07:35:50,394 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:50,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467402717] [2020-12-23 07:35:50,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:50,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:35:50,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114178803] [2020-12-23 07:35:50,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:50,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:50,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:50,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:50,396 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand 8 states. [2020-12-23 07:35:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:50,716 INFO L93 Difference]: Finished difference Result 157 states and 183 transitions. [2020-12-23 07:35:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:35:50,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-12-23 07:35:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:50,718 INFO L225 Difference]: With dead ends: 157 [2020-12-23 07:35:50,718 INFO L226 Difference]: Without dead ends: 153 [2020-12-23 07:35:50,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:35:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-23 07:35:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 132. [2020-12-23 07:35:50,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 07:35:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2020-12-23 07:35:50,738 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 28 [2020-12-23 07:35:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:50,740 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2020-12-23 07:35:50,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:50,740 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2020-12-23 07:35:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 07:35:50,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:50,746 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 07:35:50,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:50,961 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 07:35:50,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:50,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1572440212, now seen corresponding path program 2 times [2020-12-23 07:35:50,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:50,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451171787] [2020-12-23 07:35:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:50,974 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:50,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159405410] [2020-12-23 07:35:50,974 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 07:35:51,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:35:51,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:51,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:35:51,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:51,209 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 07:35:51,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451171787] [2020-12-23 07:35:51,210 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:51,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159405410] [2020-12-23 07:35:51,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:51,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:35:51,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808232968] [2020-12-23 07:35:51,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:35:51,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:51,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:35:51,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:51,213 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand 9 states. [2020-12-23 07:35:51,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:51,561 INFO L93 Difference]: Finished difference Result 161 states and 190 transitions. [2020-12-23 07:35:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:35:51,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-12-23 07:35:51,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:51,564 INFO L225 Difference]: With dead ends: 161 [2020-12-23 07:35:51,564 INFO L226 Difference]: Without dead ends: 151 [2020-12-23 07:35:51,565 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 07:35:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-23 07:35:51,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2020-12-23 07:35:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-23 07:35:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2020-12-23 07:35:51,586 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 28 [2020-12-23 07:35:51,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:51,587 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2020-12-23 07:35:51,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:35:51,587 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2020-12-23 07:35:51,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:35:51,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:51,589 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 07:35:51,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:35:51,803 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 07:35:51,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:51,804 INFO L82 PathProgramCache]: Analyzing trace with hash -221158463, now seen corresponding path program 2 times [2020-12-23 07:35:51,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:51,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284629664] [2020-12-23 07:35:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:51,816 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:51,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921711542] [2020-12-23 07:35:51,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:35:51,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:35:51,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:51,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:35:51,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:51,952 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 07:35:51,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284629664] [2020-12-23 07:35:51,953 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:51,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921711542] [2020-12-23 07:35:51,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:51,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:35:51,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541992662] [2020-12-23 07:35:51,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:35:51,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:51,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:35:51,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:35:51,958 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand 6 states. [2020-12-23 07:35:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:52,007 INFO L93 Difference]: Finished difference Result 162 states and 193 transitions. [2020-12-23 07:35:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:35:52,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-12-23 07:35:52,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:52,009 INFO L225 Difference]: With dead ends: 162 [2020-12-23 07:35:52,009 INFO L226 Difference]: Without dead ends: 144 [2020-12-23 07:35:52,010 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 07:35:52,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-23 07:35:52,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-12-23 07:35:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-23 07:35:52,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2020-12-23 07:35:52,030 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 29 [2020-12-23 07:35:52,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:52,030 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2020-12-23 07:35:52,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:35:52,030 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2020-12-23 07:35:52,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:35:52,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:52,031 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 07:35:52,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:35:52,245 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 07:35:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:52,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1734668817, now seen corresponding path program 2 times [2020-12-23 07:35:52,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:52,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222371449] [2020-12-23 07:35:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:52,258 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:52,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167328648] [2020-12-23 07:35:52,258 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 07:35:52,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:35:52,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:52,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-23 07:35:52,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:52,539 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 07:35:52,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222371449] [2020-12-23 07:35:52,543 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:52,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167328648] [2020-12-23 07:35:52,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:52,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:35:52,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655314042] [2020-12-23 07:35:52,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:35:52,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:52,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:35:52,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:52,552 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand 9 states. [2020-12-23 07:35:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:53,039 INFO L93 Difference]: Finished difference Result 186 states and 216 transitions. [2020-12-23 07:35:53,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:35:53,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-23 07:35:53,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:53,042 INFO L225 Difference]: With dead ends: 186 [2020-12-23 07:35:53,042 INFO L226 Difference]: Without dead ends: 184 [2020-12-23 07:35:53,045 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 07:35:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-12-23 07:35:53,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 147. [2020-12-23 07:35:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-23 07:35:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-12-23 07:35:53,066 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 30 [2020-12-23 07:35:53,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:53,068 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-12-23 07:35:53,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:35:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-12-23 07:35:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:35:53,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:53,069 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 07:35:53,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:35:53,283 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 07:35:53,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:53,284 INFO L82 PathProgramCache]: Analyzing trace with hash 713600463, now seen corresponding path program 1 times [2020-12-23 07:35:53,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:53,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278815582] [2020-12-23 07:35:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:53,305 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:53,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910917193] [2020-12-23 07:35:53,306 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 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 07:35:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:53,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 07:35:53,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:53,570 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 07:35:53,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278815582] [2020-12-23 07:35:53,571 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:53,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910917193] [2020-12-23 07:35:53,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:53,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:35:53,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001092904] [2020-12-23 07:35:53,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:35:53,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:53,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:35:53,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:53,575 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 9 states. [2020-12-23 07:35:53,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:53,952 INFO L93 Difference]: Finished difference Result 183 states and 212 transitions. [2020-12-23 07:35:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:35:53,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-23 07:35:53,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:53,954 INFO L225 Difference]: With dead ends: 183 [2020-12-23 07:35:53,954 INFO L226 Difference]: Without dead ends: 181 [2020-12-23 07:35:53,956 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 07:35:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-12-23 07:35:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 147. [2020-12-23 07:35:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-23 07:35:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2020-12-23 07:35:53,976 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 30 [2020-12-23 07:35:53,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:53,976 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2020-12-23 07:35:53,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:35:53,977 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2020-12-23 07:35:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:35:53,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:53,977 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 07:35:54,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:54,193 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 07:35:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:54,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1249637014, now seen corresponding path program 1 times [2020-12-23 07:35:54,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:54,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979291938] [2020-12-23 07:35:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:54,203 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:54,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954526008] [2020-12-23 07:35:54,204 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 07:35:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:35:54,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:35:54,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:54,429 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 07:35:54,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979291938] [2020-12-23 07:35:54,429 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:54,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954526008] [2020-12-23 07:35:54,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:54,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:35:54,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485363524] [2020-12-23 07:35:54,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:35:54,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:54,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:35:54,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:35:54,434 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand 8 states. [2020-12-23 07:35:54,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:54,727 INFO L93 Difference]: Finished difference Result 191 states and 220 transitions. [2020-12-23 07:35:54,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:35:54,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-23 07:35:54,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:54,729 INFO L225 Difference]: With dead ends: 191 [2020-12-23 07:35:54,729 INFO L226 Difference]: Without dead ends: 179 [2020-12-23 07:35:54,730 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 07:35:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-23 07:35:54,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 139. [2020-12-23 07:35:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-23 07:35:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2020-12-23 07:35:54,748 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 32 [2020-12-23 07:35:54,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:54,749 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2020-12-23 07:35:54,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:35:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2020-12-23 07:35:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:35:54,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:54,750 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 07:35:54,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:35:54,963 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 07:35:54,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:54,964 INFO L82 PathProgramCache]: Analyzing trace with hash -744507692, now seen corresponding path program 2 times [2020-12-23 07:35:54,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:54,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671973882] [2020-12-23 07:35:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:54,974 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:54,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102993983] [2020-12-23 07:35:54,975 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 07:35:55,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:35:55,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:55,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-23 07:35:55,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:55,318 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 07:35:55,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671973882] [2020-12-23 07:35:55,319 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:55,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102993983] [2020-12-23 07:35:55,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:55,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:35:55,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718687275] [2020-12-23 07:35:55,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:35:55,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:55,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:35:55,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:35:55,321 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 10 states. [2020-12-23 07:35:55,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:55,534 INFO L93 Difference]: Finished difference Result 195 states and 226 transitions. [2020-12-23 07:35:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:35:55,534 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-12-23 07:35:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:55,536 INFO L225 Difference]: With dead ends: 195 [2020-12-23 07:35:55,536 INFO L226 Difference]: Without dead ends: 183 [2020-12-23 07:35:55,536 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 07:35:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-12-23 07:35:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2020-12-23 07:35:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-23 07:35:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-12-23 07:35:55,555 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 32 [2020-12-23 07:35:55,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:55,556 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-12-23 07:35:55,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:35:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-12-23 07:35:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:35:55,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:55,556 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 07:35:55,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:35:55,770 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 07:35:55,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:55,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1488876978, now seen corresponding path program 3 times [2020-12-23 07:35:55,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:55,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682712995] [2020-12-23 07:35:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:55,781 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:55,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7214902] [2020-12-23 07:35:55,781 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 07:35:55,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:35:55,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:55,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:35:55,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:57,705 WARN L197 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-23 07:35:57,724 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 07:35:57,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682712995] [2020-12-23 07:35:57,725 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:57,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7214902] [2020-12-23 07:35:57,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:57,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:35:57,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037739064] [2020-12-23 07:35:57,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:35:57,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:57,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:35:57,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:35:57,727 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 7 states. [2020-12-23 07:35:58,023 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-23 07:35:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:58,146 INFO L93 Difference]: Finished difference Result 194 states and 219 transitions. [2020-12-23 07:35:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:35:58,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-23 07:35:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:58,149 INFO L225 Difference]: With dead ends: 194 [2020-12-23 07:35:58,149 INFO L226 Difference]: Without dead ends: 190 [2020-12-23 07:35:58,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-23 07:35:58,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-12-23 07:35:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-23 07:35:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 182 transitions. [2020-12-23 07:35:58,174 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 182 transitions. Word has length 37 [2020-12-23 07:35:58,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:58,174 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 182 transitions. [2020-12-23 07:35:58,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:35:58,174 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 182 transitions. [2020-12-23 07:35:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:35:58,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:58,175 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 07:35:58,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:58,390 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 07:35:58,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:58,391 INFO L82 PathProgramCache]: Analyzing trace with hash 475912686, now seen corresponding path program 4 times [2020-12-23 07:35:58,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:58,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100649600] [2020-12-23 07:35:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:58,401 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:58,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062747931] [2020-12-23 07:35:58,401 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 07:35:58,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:35:58,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:35:58,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:35:58,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:35:58,630 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 07:35:58,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100649600] [2020-12-23 07:35:58,631 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:35:58,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062747931] [2020-12-23 07:35:58,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:35:58,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:35:58,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818774704] [2020-12-23 07:35:58,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:35:58,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:35:58,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:35:58,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:35:58,633 INFO L87 Difference]: Start difference. First operand 154 states and 182 transitions. Second operand 9 states. [2020-12-23 07:35:59,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:35:59,206 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2020-12-23 07:35:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:35:59,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-23 07:35:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:35:59,208 INFO L225 Difference]: With dead ends: 192 [2020-12-23 07:35:59,208 INFO L226 Difference]: Without dead ends: 182 [2020-12-23 07:35:59,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:35:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-23 07:35:59,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2020-12-23 07:35:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-12-23 07:35:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-12-23 07:35:59,230 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 37 [2020-12-23 07:35:59,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:35:59,230 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-12-23 07:35:59,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:35:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-12-23 07:35:59,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:35:59,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:35:59,231 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 07:35:59,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:35:59,443 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 07:35:59,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:35:59,443 INFO L82 PathProgramCache]: Analyzing trace with hash 477759728, now seen corresponding path program 5 times [2020-12-23 07:35:59,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:35:59,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421428349] [2020-12-23 07:35:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:35:59,467 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:35:59,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663826424] [2020-12-23 07:35:59,467 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 07:36:00,333 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 07:36:00,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:36:00,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:36:00,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:36:00,471 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 07:36:00,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421428349] [2020-12-23 07:36:00,472 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:36:00,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663826424] [2020-12-23 07:36:00,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:36:00,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:36:00,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825307081] [2020-12-23 07:36:00,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:36:00,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:36:00,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:36:00,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:36:00,474 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 7 states. [2020-12-23 07:36:00,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:36:00,775 INFO L93 Difference]: Finished difference Result 201 states and 234 transitions. [2020-12-23 07:36:00,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:36:00,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-23 07:36:00,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:36:00,777 INFO L225 Difference]: With dead ends: 201 [2020-12-23 07:36:00,777 INFO L226 Difference]: Without dead ends: 197 [2020-12-23 07:36:00,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:36:00,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-23 07:36:00,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2020-12-23 07:36:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-12-23 07:36:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-12-23 07:36:00,800 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 37 [2020-12-23 07:36:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:36:00,800 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-12-23 07:36:00,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:36:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-12-23 07:36:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:36:00,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:36:00,801 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 07:36:01,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:36:01,008 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 07:36:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:36:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash -318408398, now seen corresponding path program 6 times [2020-12-23 07:36:01,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:36:01,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678585446] [2020-12-23 07:36:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:36:01,017 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:36:01,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882128703] [2020-12-23 07:36:01,017 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 07:36:01,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-23 07:36:01,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:36:01,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:36:01,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:36:01,194 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 07:36:01,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678585446] [2020-12-23 07:36:01,195 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:36:01,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882128703] [2020-12-23 07:36:01,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:36:01,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:36:01,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218704314] [2020-12-23 07:36:01,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:36:01,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:36:01,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:36:01,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:36:01,196 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 7 states. [2020-12-23 07:36:01,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:36:01,363 INFO L93 Difference]: Finished difference Result 200 states and 233 transitions. [2020-12-23 07:36:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:36:01,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-23 07:36:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:36:01,368 INFO L225 Difference]: With dead ends: 200 [2020-12-23 07:36:01,368 INFO L226 Difference]: Without dead ends: 190 [2020-12-23 07:36:01,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:36:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-23 07:36:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2020-12-23 07:36:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 07:36:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 211 transitions. [2020-12-23 07:36:01,392 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 211 transitions. Word has length 37 [2020-12-23 07:36:01,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:36:01,392 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 211 transitions. [2020-12-23 07:36:01,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:36:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 211 transitions. [2020-12-23 07:36:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:36:01,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:36:01,393 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 07:36:01,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:36:01,607 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 07:36:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:36:01,607 INFO L82 PathProgramCache]: Analyzing trace with hash -316561356, now seen corresponding path program 7 times [2020-12-23 07:36:01,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:36:01,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888489438] [2020-12-23 07:36:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:36:01,615 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:36:01,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987006051] [2020-12-23 07:36:01,616 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 07:36:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:36:01,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:36:01,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:36:01,896 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 07:36:01,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888489438] [2020-12-23 07:36:01,897 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:36:01,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987006051] [2020-12-23 07:36:01,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:36:01,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:36:01,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304040864] [2020-12-23 07:36:01,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:36:01,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:36:01,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:36:01,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:36:01,900 INFO L87 Difference]: Start difference. First operand 177 states and 211 transitions. Second operand 10 states. [2020-12-23 07:36:02,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:36:02,383 INFO L93 Difference]: Finished difference Result 214 states and 251 transitions. [2020-12-23 07:36:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:36:02,384 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-12-23 07:36:02,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:36:02,385 INFO L225 Difference]: With dead ends: 214 [2020-12-23 07:36:02,386 INFO L226 Difference]: Without dead ends: 210 [2020-12-23 07:36:02,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:36:02,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-12-23 07:36:02,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 181. [2020-12-23 07:36:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-23 07:36:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2020-12-23 07:36:02,411 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 37 [2020-12-23 07:36:02,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:36:02,412 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2020-12-23 07:36:02,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:36:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2020-12-23 07:36:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:36:02,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:36:02,413 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 07:36:02,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 07:36:02,629 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 07:36:02,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:36:02,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1329525648, now seen corresponding path program 8 times [2020-12-23 07:36:02,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:36:02,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191416141] [2020-12-23 07:36:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:36:02,638 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:36:02,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381950368] [2020-12-23 07:36:02,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:36:02,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:36:02,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:36:02,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:36:02,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:36:02,913 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 07:36:02,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191416141] [2020-12-23 07:36:02,913 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:36:02,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381950368] [2020-12-23 07:36:02,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:36:02,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:36:02,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59602572] [2020-12-23 07:36:02,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:36:02,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:36:02,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:36:02,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:36:02,915 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand 10 states. [2020-12-23 07:36:03,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:36:03,455 INFO L93 Difference]: Finished difference Result 210 states and 247 transitions. [2020-12-23 07:36:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:36:03,455 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-12-23 07:36:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:36:03,457 INFO L225 Difference]: With dead ends: 210 [2020-12-23 07:36:03,457 INFO L226 Difference]: Without dead ends: 200 [2020-12-23 07:36:03,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:36:03,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-23 07:36:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 181. [2020-12-23 07:36:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-23 07:36:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2020-12-23 07:36:03,482 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 37 [2020-12-23 07:36:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:36:03,482 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2020-12-23 07:36:03,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:36:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2020-12-23 07:36:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:36:03,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:36:03,483 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 07:36:03,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:36:03,699 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 07:36:03,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:36:03,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1146728065, now seen corresponding path program 3 times [2020-12-23 07:36:03,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:36:03,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385404332] [2020-12-23 07:36:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:36:03,708 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:36:03,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273260880] [2020-12-23 07:36:03,708 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 07:36:03,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 07:36:03,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:36:03,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:36:03,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:36:03,844 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 07:36:03,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385404332] [2020-12-23 07:36:03,844 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:36:03,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273260880] [2020-12-23 07:36:03,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:36:03,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:36:03,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963512037] [2020-12-23 07:36:03,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:36:03,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:36:03,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:36:03,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:36:03,846 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand 7 states. [2020-12-23 07:36:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:36:03,915 INFO L93 Difference]: Finished difference Result 211 states and 251 transitions. [2020-12-23 07:36:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:36:03,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-12-23 07:36:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:36:03,917 INFO L225 Difference]: With dead ends: 211 [2020-12-23 07:36:03,917 INFO L226 Difference]: Without dead ends: 193 [2020-12-23 07:36:03,918 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 07:36:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-12-23 07:36:03,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2020-12-23 07:36:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-12-23 07:36:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 228 transitions. [2020-12-23 07:36:03,944 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 228 transitions. Word has length 38 [2020-12-23 07:36:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:36:03,944 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 228 transitions. [2020-12-23 07:36:03,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:36:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 228 transitions. [2020-12-23 07:36:03,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:36:03,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:36:03,945 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 07:36:04,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 07:36:04,160 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 07:36:04,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:36:04,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1188185069, now seen corresponding path program 3 times [2020-12-23 07:36:04,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:36:04,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027591446] [2020-12-23 07:36:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:36:04,168 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:36:04,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813029472] [2020-12-23 07:36:04,168 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 07:36:04,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:36:04,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:36:04,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:36:04,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:36:04,466 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 07:36:04,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027591446] [2020-12-23 07:36:04,466 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:36:04,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813029472] [2020-12-23 07:36:04,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:36:04,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:36:04,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988670513] [2020-12-23 07:36:04,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:36:04,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:36:04,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:36:04,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:36:04,468 INFO L87 Difference]: Start difference. First operand 193 states and 228 transitions. Second operand 11 states. [2020-12-23 07:36:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:36:08,859 INFO L93 Difference]: Finished difference Result 253 states and 290 transitions. [2020-12-23 07:36:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:36:08,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-12-23 07:36:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:36:08,861 INFO L225 Difference]: With dead ends: 253 [2020-12-23 07:36:08,861 INFO L226 Difference]: Without dead ends: 251 [2020-12-23 07:36:08,862 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 07:36:08,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-12-23 07:36:08,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 193. [2020-12-23 07:36:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-12-23 07:36:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 227 transitions. [2020-12-23 07:36:08,893 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 227 transitions. Word has length 39 [2020-12-23 07:36:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:36:08,894 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 227 transitions. [2020-12-23 07:36:08,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:36:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 227 transitions. [2020-12-23 07:36:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:36:08,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:36:08,895 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 07:36:09,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:36:09,109 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 07:36:09,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:36:09,109 INFO L82 PathProgramCache]: Analyzing trace with hash 2085713873, now seen corresponding path program 2 times [2020-12-23 07:36:09,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:36:09,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262090207] [2020-12-23 07:36:09,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:36:09,118 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:36:09,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770299896] [2020-12-23 07:36:09,118 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 07:36:09,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:36:09,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:36:09,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-23 07:36:09,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:36:11,669 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-12-23 07:36:18,495 WARN L197 SmtUtils]: Spent 6.76 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-23 07:36:18,531 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:36:18,535 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:36:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:36:18,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262090207] [2020-12-23 07:36:18,570 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:36:18,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770299896] [2020-12-23 07:36:18,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:36:18,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:36:18,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505227547] [2020-12-23 07:36:18,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:36:18,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:36:18,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:36:18,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:36:18,572 INFO L87 Difference]: Start difference. First operand 193 states and 227 transitions. Second operand 13 states. [2020-12-23 07:36:26,418 WARN L197 SmtUtils]: Spent 5.19 s on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-12-23 07:36:42,713 WARN L197 SmtUtils]: Spent 10.29 s on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-12-23 07:37:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:05,393 INFO L93 Difference]: Finished difference Result 239 states and 276 transitions. [2020-12-23 07:37:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:37:05,394 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-12-23 07:37:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:05,396 INFO L225 Difference]: With dead ends: 239 [2020-12-23 07:37:05,396 INFO L226 Difference]: Without dead ends: 237 [2020-12-23 07:37:05,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=113, Invalid=392, Unknown=1, NotChecked=0, Total=506 [2020-12-23 07:37:05,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-23 07:37:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 198. [2020-12-23 07:37:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-23 07:37:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 232 transitions. [2020-12-23 07:37:05,427 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 232 transitions. Word has length 39 [2020-12-23 07:37:05,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:05,427 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 232 transitions. [2020-12-23 07:37:05,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:37:05,427 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 232 transitions. [2020-12-23 07:37:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:37:05,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:05,428 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 07:37:05,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 07:37:05,629 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 07:37:05,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:05,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1047636459, now seen corresponding path program 3 times [2020-12-23 07:37:05,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:05,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494088011] [2020-12-23 07:37:05,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:05,643 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:05,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898131654] [2020-12-23 07:37:05,643 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 07:37:05,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:37:05,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:05,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:37:05,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:10,131 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 07:37:10,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494088011] [2020-12-23 07:37:10,131 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:10,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898131654] [2020-12-23 07:37:10,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:10,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:37:10,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468466320] [2020-12-23 07:37:10,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:37:10,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:10,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:37:10,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=64, Unknown=2, NotChecked=0, Total=90 [2020-12-23 07:37:10,133 INFO L87 Difference]: Start difference. First operand 198 states and 232 transitions. Second operand 10 states. [2020-12-23 07:37:12,212 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-23 07:37:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:53,605 INFO L93 Difference]: Finished difference Result 228 states and 259 transitions. [2020-12-23 07:37:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:37:53,605 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-12-23 07:37:53,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:53,607 INFO L225 Difference]: With dead ends: 228 [2020-12-23 07:37:53,608 INFO L226 Difference]: Without dead ends: 202 [2020-12-23 07:37:53,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=67, Invalid=169, Unknown=4, NotChecked=0, Total=240 [2020-12-23 07:37:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-23 07:37:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 164. [2020-12-23 07:37:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-23 07:37:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 188 transitions. [2020-12-23 07:37:53,635 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 188 transitions. Word has length 39 [2020-12-23 07:37:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:53,635 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 188 transitions. [2020-12-23 07:37:53,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:37:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 188 transitions. [2020-12-23 07:37:53,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 07:37:53,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:53,636 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 07:37:53,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 07:37:53,850 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 07:37:53,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:53,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1295664152, now seen corresponding path program 2 times [2020-12-23 07:37:53,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:53,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227980107] [2020-12-23 07:37:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:53,867 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:53,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473622414] [2020-12-23 07:37:53,868 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 07:37:53,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:37:53,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:53,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 62 conjunts are in the unsatisfiable core [2020-12-23 07:37:53,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:06,512 WARN L197 SmtUtils]: Spent 12.28 s on a formula simplification that was a NOOP. DAG size: 31 [2020-12-23 07:38:28,790 WARN L197 SmtUtils]: Spent 18.00 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 07:38:49,195 WARN L197 SmtUtils]: Spent 11.96 s on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-23 07:39:17,056 WARN L197 SmtUtils]: Spent 19.09 s on a formula simplification that was a NOOP. DAG size: 41 [2020-12-23 07:39:23,280 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-12-23 07:39:23,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227980107] [2020-12-23 07:39:23,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:23,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473622414] [2020-12-23 07:39:23,294 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:39:23,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:23,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:39:23,294 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:39:23,294 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:39:23,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 07:39:23,531 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:39:23,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:39:23 BoogieIcfgContainer [2020-12-23 07:39:23,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:39:23,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:39:23,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:39:23,533 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:39:23,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:35:44" (3/4) ... [2020-12-23 07:39:23,537 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:39:23,537 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:39:23,538 INFO L168 Benchmark]: Toolchain (without parser) took 220117.95 ms. Allocated memory was 151.0 MB in the beginning and 286.3 MB in the end (delta: 135.3 MB). Free memory was 126.3 MB in the beginning and 105.5 MB in the end (delta: 20.8 MB). Peak memory consumption was 156.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:39:23,538 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:39:23,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.98 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:39:23,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.91 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:39:23,539 INFO L168 Benchmark]: Boogie Preprocessor took 27.71 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 113.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:39:23,539 INFO L168 Benchmark]: RCFGBuilder took 430.85 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 95.8 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:39:23,540 INFO L168 Benchmark]: TraceAbstraction took 219325.92 ms. Allocated memory was 151.0 MB in the beginning and 286.3 MB in the end (delta: 135.3 MB). Free memory was 95.4 MB in the beginning and 106.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 126.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:39:23,540 INFO L168 Benchmark]: Witness Printer took 4.26 ms. Allocated memory is still 286.3 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:39:23,543 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 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.98 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.2 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 41.91 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.71 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 113.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 430.85 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 95.8 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 219325.92 ms. Allocated memory was 151.0 MB in the beginning and 286.3 MB in the end (delta: 135.3 MB). Free memory was 95.4 MB in the beginning and 106.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 126.1 MB. Max. memory is 8.0 GB. * Witness Printer took 4.26 ms. Allocated memory is still 286.3 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [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++<5 [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++<5 [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++<5 [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++<5 [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: 219.2s, OverallIterations: 29, TraceHistogramMax: 4, AutomataDifference: 101.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1126 SDtfs, 1923 SDslu, 3479 SDs, 0 SdLazy, 3469 SolverSat, 357 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 65.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 843 GetRequests, 568 SyntacticMatches, 4 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 50.5s 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, 620 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 762 NumberOfCodeBlocks, 697 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 734 ConstructedInterpolants, 4 QuantifiedInterpolants, 298217 SizeOfPredicates, 251 NumberOfNonLiveVariables, 3169 ConjunctsInSsa, 744 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 [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...